In 2020, around 28.8 percent of the global population were identified as Christian. Around 25.6 percent of the global population identify as Muslims, followed by 14.9 percent of global populations as Hindu. The number of Muslims increased by 347 million, when compared to 2010 data, more than all other religions combined.

As of 2010, Christianity was the religion with the most followers worldwide, followed by Islam (Muslims) and Hinduism. In the forty years between 2010 and 2050, it is projected that the landscape of world religions will undergo some noticeable changes, with the number of Muslims almost catching up to Christians. The changes in population sizes of each religious group is largely dependent on demographic development, for example, the rise in the world's Christian population will largely be driven by population growth in Sub-Saharan Africa, while Muslim populations will rise across various regions of Africa and South Asia. As India's population is set to grow while China's goes into decline, this will be reflected in the fact that Hindus will outnumber the unaffiliated by 2050. In fact, India may be home to both the largest Hindu and Muslim populations in the world by the middle of this century.

Census: Population: by Religion: Not Stated: Tamil Nadu data was reported at 188,586.000 Person in 03-01-2011. This records an increase from the previous number of 59,344.000 Person for 03-01-2001. Census: Population: by Religion: Not Stated: Tamil Nadu data is updated decadal, averaging 123,965.000 Person from Mar 2001 (Median) to 03-01-2011, with 2 observations. The data reached an all-time high of 188,586.000 Person in 03-01-2011 and a record low of 59,344.000 Person in 03-01-2001. Census: Population: by Religion: Not Stated: Tamil Nadu data remains active status in CEIC and is reported by Office of the Registrar General & Census Commissioner, India. The data is categorized under India Premium Database’s Demographic – Table IN.GAE009: Census: Population: by Religion: Not Stated.

In 2023, **** percent of Americans were unaffiliated with any religion. A further **** percent of Americans were White evangelical Protestants, and an additional **** percent were White mainline Protestants. Religious trends in the United States Although the United States is still home to the largest number of Christians worldwide, the nation has started to reflect a more diverse religious landscape in recent years. Americans now report a wide range of religious beliefs and backgrounds, in addition to an increasing number of people who are choosing to identify with no religion at all. Studies suggest that many Americans have left their previous religion to instead identify as atheist, agnostic, or nothing in particular, with many reasoning that they stopped believing in the religion's teachings, that they didn't approve of negative teachings or treatment of LGBTQ+ people, or that their family was never that religious growing up. Christian controversies Over the last few years, controversies linked to Christian denominations have plagued the nation, including reports of child sexual abuse by the Catholic Church, the Church of Jesus Christ of Latter-day Saints, and the Southern Baptist Convention. Christian churches have also been accused of supporting discriminatory actions against LGBTQ+ people and people belonging to other religious groups. In addition, there have been increasing concerns about Christian nationalism, the political ideology that asserts that America was founded to be a Christian nation. Although the majority of Americans still think that declaring the United States a Christian nation would go against the U.S. Constitution, studies found that most Republicans would be in favor of this change.

Null Hypotheses (H-not/H0) :- Are religious people more happy, and does it contribute to a better experience of life? ----------------------AND in the same vein ---------------------------------------------------------------------- Is the increasing trend of Atheism directly related to increasing reported levels of ADHD, depression and suicide rates around the world?

The research :- A slew of research suggests that religious people are happier, are better at keeping family ties, contribute to society more by being involved in the community, report better life experience and are better able to cope with life's setbacks like Divorce. Is this true? Below is a random list of research I found from googling :-

(1) https://www.psychologytoday.com/blog/more-mortal/201212/are-religious-people-happier-non-religious-people (2) https://www.psychologytoday.com/blog/curious/201510/does-being-religious-make-us-happy (3) http://www.huffingtonpost.co.uk/2016/02/02/office-for-national-statistics-well-being-data_n_9138076.html (4) https://www.unilad.co.uk/news/new-research-shows-religious-people-are-happier-than-atheists/ (5) https://www.christiantoday.com/article/why-religious-people-are-happier-and-how-to-share-the-joy/78581.htm (6) http://www.pewforum.org/2016/04/12/religion-in-everyday-life/

What the Quran says :- Having graduated from the London School of Economics (2004, Bsc Hons) and having been greatly influenced by Richard Dawkins, books like "The God Delusion" etc. for about 7 years and seeking extensively through the various religious/self development traditions including Judaism, Christianity, Buddhism, Hinduism, The Landmark Forum and Tai Chi, I converted to Islam 4 years ago. I can personally attest to having a much greater experience of life and feeling peace and tranquility and calmness in my heart. In the Sufi tradition, the heart is the kernel of connecting to God (Allah), and the seat of God consciousness :- https://www.youtube.com/watch?v=nqNPVP6GerM&index=1&list=PLwFLXkJiBtuza1uSJHsB8MJCfQ9l7h8jf

Allah says in the Quran :- "And whoever turns away from My remembrance - indeed, he will have a depressed life,...." [Quran 20:124]

And Allah also says in the Quran :- "Those who have believed and whose hearts are assured by the remembrance of Allah. Unquestionably, by the remembrance of Allah hearts are assured." [Quran 13:28]

Dataset :- The data set regarding population is the gross population by country taken from the World Bank Data Site, link here :- https://data.worldbank.org/indicator/SP.POP.TOTL?locations=US&view=chart

Can you :- Look at populations around the world using the dataset, and look at suicide levels, depression levels, reported ADHD levels, and anxiety levels and find a correlation between the increasing trend of atheism in the world and these reported markers.

The global population of Buddhists is projected to slightly increase up until the year 2030, at which point it will begin a gradual decline. In terms of its share of total world population, however, Buddhism has already seen a decline from over seven percent in 2010, with this being projected to decline further to close to five percent in 2050. This decline is related to Buddhism being popular in countries whose populations are in a natural decline, such as Japan or South Korea (and Thailand in the near future), as well as demographic developments in countries that have a policy of state atheism, such as China or Vietnam.While this decline in its traditional regions of influence in East and Southeast Asia will cause an aggregate fall in the number of Buddhists, there is likely to be some growth in other regions of the globe, such as Western European and North American countries, where the popularity of the ideas of Buddhism have grown in influence in recent decades.

In 2023, over ** percent of Indonesians declared themselves to be Muslim, followed by *** percent who were Christians. Indonesia has the largest Islamic population in the world and for this reason is often recognized as a Muslim nation. However, Indonesia is not a Muslim nation according to its constitution. The archipelago is a multifaith country and officially recognizes six religions – Islam, Protestantism, Catholicism, Buddhism, Hinduism, and Confucianism. Not all provinces in Indonesia are Muslim majority The spread of Islam in Indonesia began on the west side of the archipelago, where the main maritime trade routes were located. Until today, most of the Indonesian Muslim population are residing in Western and Central Indonesia, while the majority religion of several provinces in Eastern Indonesia, such as East Nusa Tenggara and Bali, is Christian and Hindu, respectively. Discrimination towards other beliefs in Indonesia The Indonesian constitution provides for freedom of religion. However, the Government Restrictions Index Score on religion in Indonesia is relatively high. Indonesians who practice unrecognized religions, including Indonesia’s indigenous or traditional belief systems, such as animism, dynamism, and totemism, face legal restrictions and discrimination. Indonesian law requires its citizens to put one of the recognized religions on their national identity cards, with some exceptions for indigenous religions. Although legally citizens may leave the section blank, atheism or agnosticism is considered uncommon in Indonesia.

In Brazil, 70 percent of the respondents believed in God as described in the holy scriptures, and another 19 percent believed in a higher power or spirit. In South Africa, the figures were 73 and 16 percent respectively. By contrast, less than one in five in Japan and only one in three in South Korea believed in God or some form of spirit or higher power.

This statistic shows the moral stance of Americans regarding an affair between a married man and a married woman in 2018. During the survey, 10 percent of respondents stated that they think an affair between a married man and a married woman is morally acceptable.

The moral acceptance of social issues in the US

More than two thirds of respondents to a survey in the United States responded that they believe that sex between an unmarried man and woman is morally acceptable, while one third believed that it is morally wrong and only 1 percent stated that it is not a moral issue. Unsurprisingly, when posing the same question to respondents of the Mormon faith, a significantly higher percentage stated they believed that premarital sex is morally wrong.

Regarding other morally acceptable or unacceptable actions, divorce had an acceptance rate of 71 percent among the American population, and the use of birth control was deemed acceptable – remarkably higher than the acceptance rates for premarital sex.

In the United States, the likelihood of divorce after the first marriage is at about 41 percent, and proportionally higher the more times one gets hitched; and it is increasingly more accepted than it has been in the past. Interestingly, the 2015 results for premarital sex acceptance in the United States are quite different from the results of a similar survey back in 2013, conducted globally, in which 36 percent of respondents in the United States said that premarital sex is not a moral issue, only 29 percent responded that it was acceptable and 30 percent stated it was unacceptable. The country with the least acceptance was Pakistan, where no one responded that premarital sex was acceptable. This is not surprising when taking into account that Pakistan is an Islamic Republic. In contrast, Czechia had the highest acceptance rates, a country with one of the largest atheist populations worldwide.

This statistic shows the moral stance of Americans regarding sexual intercourse between an unmarried man and an unmarried woman as of 2018. During the survey, 69 percent of respondents stated that they think sex between unmarried partners is morally acceptable.

The moral acceptance of social issues in the US

More than two thirds of respondents to a survey in the United States responded that they believe that sex between an unmarried man and woman is morally acceptable, while one third believed that it is morally wrong and only 1 percent stated that it is not a moral issue. Unsurprisingly, when posing the same question to respondents of the Mormon faith, a significantly higher percentage stated they believed that premarital sex is morally wrong.

Regarding other morally acceptable or unacceptable actions, divorce had an acceptance rate of 71 percent among the American population, and the use of birth control was deemed acceptable – remarkably higher than the acceptance rates for premarital sex.

In the United States, the likelihood of divorce after the first marriage is at about 41 percent, and proportionally higher the more times one gets hitched; and it is increasingly more accepted than it has been in the past. Interestingly, the 2015 results for premarital sex acceptance in the United States are quite different from the results of a similar survey back in 2013, conducted globally, in which 36 percent of respondents in the United States said that premarital sex is not a moral issue, only 29 percent responded that it was acceptable and 30 percent stated it was unacceptable. The country with the least acceptance was Pakistan, where no one responded that premarital sex was acceptable. This is not surprising when taking into account that Pakistan is an Islamic Republic. In contrast, Czechia had the highest acceptance rates, a country with one of the largest atheist populations worldwide.