After a brief look at this discussion I am surprised that little reference is made of the evolutionary aspects of having children. Posts tend to center on "It's all about me!" rather than "it's all about the genes!"

Atomic theory and evolutionary theory would be the two conceptual frameworks that I would do most to teach to people: the first to understand the world and the second to understand behavior. I believe we have failed, as a society, to teach the second (and possibly the first).