According to the same study Christianity is expected to lose a net of 66 million adherents (40 million converts versus 106 million apostate) mostly to religiously unaffiliated category between 2010 and 2050, it is also expected that Christianity may have the largest net loses in terms of religious conversion.
Around 31% of the world's population are Christians, closely followed by Muslims at 25%. Jews have the smallest population of major religions, with only 0.2% of the world identifying as Jewish.
In 1971, Christians represented 86.2% of the Australian population. In 2021, Christians were down to 43.9% of the population. The 2021 Census also show that identification with other religions besides Christianity has grown from 3.5% in 1996 to 10% of the population in 2021.
A 2021 Gallup poll revealed another grim number for Christians: church membership in the US has fallen below 50% for the first time.
In 2019, 19% of Americans said they attended a religious service once a week. That percentage has now dropped to 16% attending weekly and 13% saying they attend "a few times a year." Yet despite the downward trends in overall church attendance, PRRI found that those still going are happy.
Christianity, the largest religion in the United States, experienced a 20th-century high of 91% of the total population in 1976. This declined to 73.7% by 2016 and 64% in 2022.
Not only is religion growing overall, but Christianity specifically is growing. With a 1.17% growth rate, almost 2.56 billion people will identify as a Christian by the middle of 2022. By 2050, that number is expected to top 3.33 billion.
For example, some may find religion's traditional hierarchies and rules to be too antiquated, or maybe they weren't raised in a religious household to begin with. For others, it could've been a church scandal or traumatic event that sparked a crisis of faith.
Over the past four decades, Christianity has grown faster in China than anywhere else in the world. Daryl Ireland, a Boston University School of Theology research assistant professor of mission, estimates that the Christian community there has grown from 1 million to 100 million.
The 2021 census found that 38.9% of Australian-born Australians claim no religion.
Most common religions in 2021 Census
But as Christianity declines, the number of Australians who follow other faiths including Islam, Hinduism, Buddhism and Sikhism are on the rise.
Of the world's major religions, Christianity is the largest, with more than two billion followers. Christianity is based on the life and teachings of Jesus Christ and is approximately 2,000 years old.
Modern growth. Islam is the fastest-growing religion in the world. In 1990, 1.1 billion people were Muslims, while in 2010, 1.6 billion people were Muslims.
Over the next four decades, Christians will remain the largest religious group, but Islam will grow faster than any other major religion. If current trends continue, by 2050 … The number of Muslims will nearly equal the number of Christians around the world.
As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global population, known as Hindus. Hinduism has been called the world's oldest religion still practised, though some debate remains.
National surveys conducted in the early 21st century estimated that some 80% of the population of China, which is more than a billion people, practice some kind of Chinese folk religion; 13–16% are Buddhists; 10% are Taoist; 2.53% are Christians; and 0.83% are Muslims.
Hinduism is the world's oldest religion, according to many scholars, with roots and customs dating back more than 4,000 years. Today, with more than 1 billion followers, Hinduism is the third-largest religion worldwide, after Christianity and Islam. Roughly 94 percent of the world's Hindus live in India.
In the end, there are times to leave a church and you shouldn't feel undue guilt or shame for doing so. But, it's highly probable that you should stay, pray, worship, work, submit, and serve within your church for the glory of Christ.
In short, people reject religion for about as many different reasons as one can imagine. These reasons include: irreligious friends and family members, higher education, personal tragedies, exposure to new cultures, liberal politics, sexual values, religious hypocrisy, and objection to particular religious doctrines.
Almost zilch—or somewhere between two and three per cent of the population. And that number is on the way down, not up—from 2.6 per cent in 1971 to 2.3 per cent in 2001. The census figures for 2011 have not been officially released yet, but leaked figures suggest that there may have been another small decline.
77% of new converts to Islam are from Christianity, whereas 19% were from non-religion. Conversely, 55% of Muslims who left Islam became non-religious, and 22% converted to Christianity.
Since 2007, there has been a remarkably sharp trend away from religion. In virtually every high-income country, religion has continued to decline. At the same time, many poor countries, together with most of the former communist states, have also become less religious.
The United States has the largest Christian population in the world, followed by Brazil, Mexico, Russia, and the Philippines.