Theism worldwide is very strong and very healthy. 2.8 billion Muslims plus 2.9 billion Christians by 2050 -- if you believe stuff like that down below? Does that come out to 5.7 billion Theists by 2050? And that's not counting the Jews. 5.7 billion Theists is going to be a lot of Theists by 2050 Projected growth of Christianity by 2050 Some of the projections are as follows: [96] Over the 2010-2050 period, Christians will remain the largest religious group with 30.7% of the world’s population. However, Islam will grow faster and become 29.7% of the world’s population. Therefore, by 2050 there will be 2.8 billion Muslims compared to 2.9 billion Christians. “In the United States, Christians will decline from more than three-quarters of the population in 2010 to two-thirds in 2050.” “Four out of every 10 Christians in the world will live in sub-Saharan Africa.” ` In the section By Country, here: https://en.wikipedia.org/wiki/Christ...wth#By_country ` _____________ ` Christendom, according to the linked article, will decline in the United States by 2050, however . . . Christendom is growing in the Global South. ` Christianity is growing in Africa. ` Christendom is growing in China. There is a huge "underground" Christianity in China. House Church. ` Christianity is huge in South Korea --and growing. `