It's not a reproductive numbers game... If it were, ath/agn would never win. No humanist group moderator tells members to reproduce as much as possible as an obligation of any kind.

As science learns more and we find, let's say, the Q continuum or we're able to create a universe at a lab bench, it will be harder and harder to defend scriptural theism.

It would be ideal if people could push their gods aside, and walk towards the future as spiritual equals.

I disagree with your premise: atheism and/or agnosticism in on the rise in many First World countries, although perhaps not all. I find it more likely that the religious will die out, as then will the religions themselves.

“Ignorance is of a peculiar nature; once dispelled, it is impossible to reestablish it. It is not originally a thing of itself, but is only the absence of knowledge; and though man may be kept ignorant, he cannot be made ignorant.” - Thomas Paine

Get everyone high speed internet and watch religion die.

Atheists already outnumber catholics, and at this rate by 2038 religion should be kaput

Personally I don't see how atheism/agnosticism winning the day equates to a faith-based belief. It just sounds like a prediction to me. As to the likeliness of that prediction coming true, I'm not sure. It seemed science was becoming a more and more prominent part of everyday life for a while, but in recent years, trust for scientists unfortunately seems to be decreasing dramatically. And like you said, religious people tend to have more children. Do you guys think this is because religious people tend to lead a life that is line with how they have always been told life should be? For example, if they were raised believing that their religion was the only right one and that getting married and having children is "normal", is it safe to say many of them simply stick with their religion and start a family without ever questioning whether or not this is the right path for them?

We have all doomed anyway the way we breed with greed and no real thoughts for wildlife and nature. we take what we want and not what we need and we unlike say bees are not important to the natural world at all.

This theory wouldn't shock me.

This requires strong family members stepping out of the closet to lead people to naturalism. Christian converts to atheism would need to be a large chunk. The biggest chunk would be people who came from christian homes turning away.

I think organised religion and probably even religion itself will eventually go the way of the dodo after several swings of the pendulum back and forth between religion and lack of religion. We're living in a particularly religious moment right now so that might seem hard to believe. I do think that most people will continue to believe that the universe is ordered by some conscious force for a very long time. Perhaps even until our species is just-about extinct, I.e., for as long as we have a statistically significant amount of humans to sample most of then will believe in something like a god or gods. This isn't a belief I have complete trust or confidence in, it's just something I think is more likely to be so than not so, therefore I wouldn't consider it to be "faith-based".