> Ironically, this is evolution in action. The folks that "remember" how to have a family and raise kids have an uncontested claim to the future. The "it's too hard to have kids" crew is selecting against themselves, evolutionary speaking. That won't last.

You're only thinking about the "nature" part of "nature & nurture" though. Playing genetic pot-luck with your partner isn't the only way to have a legacy.

For example, think about all the spare time and energy that a non-child-rearing adult has to shape the cultural & technological future, and the impact that might have on the critical "nurture" element of your own child's life.