[Frost1x]

It's also worth noting that evolutionary biology tends to lag behind technology quite a bit so while reduced birth rates might be desirable for society as a whole, individuals may still have a natural urge to want to have children. Balancing that societal need with individuals desires might be a bit tricky. We're sort of on the opposite side of that fence right now with birth rates, so it's certainly possible things could just naturally align. I suspect declining birth rates right now aren't entirely due to individual desired choice, however.