Add in college and support through early-twenties (pretty baseline scenario for upper-middle class parents in the US) and the financial calculation is even tougher.

That said, if the most thoughtful potential parents don't have and raise civic-minded children, the percentage of new humans raised by less "enlightened" parents will increase, leading to a downward spiral.

For my part, I'm confident that the world is a better place because my two daughters are in it, and I'm definitely a better person for having been their father.