Do you know any families where parents still punish kids with the belt?

I do know some

That's child abuse

My mom did. But this generation of parents...not sure.

I've heard it still goes on, but I do not approve of it. I am very anti it.

Not personally, but a few years ago I saw a TV report on a "Christian" family -- looked like refugees from an episode of DUCK DYNASTY -- whose entire income came from publishing books and videos on how to beat your children to raise them as good Christians, so somewhere out there there has to be a market for the idea.