I think the point here is that the people who don't want kids are still a useful part of our gene pool, and we should look critically at what factors in to the

I think the point here is that the people who don't want kids are still a useful part of our gene pool, and we should look critically at what factors in to the decision not to have any kids - I don't think it's genetic at all. It's impossible for me not to think of Idiocracy while writing this - which was extremely exaggerated, but still...