I don't want to have kids because I lived through the "just suffer through poverty" experience and it's a great way to raise kids that have to support the psychiatry industry the rest of their lives. Poverty literally breaks a kid's brain, and you CANNOT hide money problems from your children.
That life is one "hey we didn't do good this quarter so you're being let go" away from happening for most of us. So yeah, a lot of us don't want kids.