For good reasons too. When a child is rhythmically slapped throughout childhood often deal with:
higher aggression
low self-esteem
low I.Q.
substance abuse and domestic violence as adults
sexual problems (BDSM shit)
I'm not saying to not punish your children for doing wrong, but their are better methods than rhythmically slapping them.
I'm sorry, but I don't believe with that at all. My parents spanked me and my brothers when we screwed up, and I'm not dealing with any of the things you've listed. In fact, I'm glad with who I've turned out to be.
But the spanking method was pretty popular among parent discipline for decades, and I don't think that caused just about every adult in American society to have the problems you listed.
This
Plus, have you noticed the amount of brats and ass holes we have today compared to before?