It's not unchecked, it's self regulatory. The main reason people have kids is lack of insurance for when they get old and unable to work. That's why need big fa

It's not unchecked, it's self regulatory. The main reason people have kids is lack of insurance for when they get old and unable to work. That's why need big families as a support network. Countries that care for their elderly in other ways have their fertility rate drop so low, that their population is even shrinking, which poses a huge risk in a society where most people are occupuied producing consumer goods instead of sustaining the community.