What date do you estimate atheism will overtake theism in the world population

[Succubus]

I think that those who voted "never" are simply dead wrong.  Your question is akin to asking, "When will heliocentricism take-over geocentricism?"  Many in the 15th-century would have replied, "Never," also; ditto for theism.

Given the very limited means the ancients had at their disposal geocentricism was the best picture they could paint, it's hardly surprising it stood so long. Of course It was wrong, but it worked. Until the enlightenment happened that is, and those old ideas fell like dominoes.
The problem is, human thought isn’t a tangible thing like orbital mechanics and science is powerless with regard to changing the way we think.
Given the propensity for homsaps to this day, to believe in absolute nonsense, strongly suggests there is something profoundly wrong with in the way our brains are wired. Perhaps there's some sort of switch or relay in our brain's that needs to be triggered at age 4-5yo? Some of us did make that connection, we are called rational thinkers. Others will keep on buying ten different branded pain killers for ten different ailments, all @£4-5 a packet. All of them with the same active ingredient, Paracetamol, which costs pennies.

What is the net worth of the Catholic church? Financially; probably in the trillions, actual worth? Two aspirin. Religious belief is a mind virus and I don't see an over the counter remedy appearing any time soon.