Not commenting on any other part of your post, but, replacement fertility rate is roughly 2.1 children per woman. In other words, to sustain a population at it

Not commenting on any other part of your post, but, replacement fertility rate is roughly 2.1 children per woman. In other words, to sustain a population at its current level, most women need to have two babies, and some need to have three. https://en.wikipedia.org/wiki/Sub-replacement_fertility https://en.wikipedia.org/wiki/Sub-replacement_fertility