Mental manipulation is harder to heal, physical wounds heal and our mind forgets about event.
I think this is actually one of the problems in the world today. I grew up where it was possible to spank a child and I got spanked. No normal parent hurts a child when spanking. However, that is n longer a tool to use for discipline, so psychological manipulation is applied instead, by people who don't have the training to do it well. A smack on the wrist or butt with a sting that last moments, or a psychological scar that will last a lifetime. Which is better? And, the parents who would actually hit and hurt their children, still do so.