I know people who would die to have children so they can see them become successful well adjusted adults. Those people can have kids.
I also know people who dont want to have kids. They dont have to.
I also also know people who really want kids, but in the way a person would want a dog, so they can train it to be good, hit it when its bad, and itll never be older than 3 years because they havent thought that far ahead. These people should be sterilized.