It is disturbing that people take for granted that this is an economic problem. This thread is full of people lamenting the fact that we could support X times as many people as we do now if we all just sacrifice Y. When I look around the world today, I think the biggest resource that is lacking is economic opportunity. Huge swathes of people are desperate, angry, and depressed, I think because there is no opportunity…
Fewer children increases unequality. Less children means, that inheritance does not spread across several people. To the contrary, it consolidates within an ever shrinking size of the population. And because as of today it's capital ownership and not work that makes you rich (with few exceptions), higher demand for work might not be enough to offset this development.