The church learned centuries ago that her jurisdiction and authority concern revealed truths and their interpretations, not willy nilly pronouncements on any given topic. God has not revealed the precise ‘sustainable carrying capacity’ of earth, so it is a matter of discernment and debate for which we must our intellects.
Here is a non-biased site that tells much of the story:
cia.gov/library/publications/the-world-factbook/rankorder/2127rank.html
Long term demographics are ALL about total fertility rates (TFR). If women on average have more than 2 kids, the population WILL increase. If they on average have less, it WILL decrease. There is a time lag, of course (the human lifespan).
When you go to my link an alarming thing instantly becomes apparent. Virtually every industrialized, stable and prosperous nation on earth has a sub-replacement TFR. The ongoing population increases are ONLY due to the high fertility rates ongoing in countries not yet industrialized and due to the time lag (baby boomers aren’t dying off yet). The third world is very rapidly adopting Western attitudes about fertility as well.
It’s very clear from the data that there is SOMETHING about modern civilization that inherently militates towards sub-replacement fertility. We can argue about what that something is (I’d argue it is the contraceptive mentality that sex and babies are separate topics), but the facts on the ground are nearly incontrovertable: We’ve already passed an inflection point and dramatic population declines, especially in Western nations will be underway within just a few decades. It’s already happening in places like Russia and Japan.