Self-responsibility leaves no rooms for excuses that derive from "culture made me this way". It's weak. People can think for themselves, it's a decision when they prefer not to.
It's not some grand high intelligent revelation that seriously hitting your child is a malicious act of sadism.
No it's not weak. We are NOT talking about parents hitting their child in 2023. This is not the discussion. I think you are lacking perspective within the context of this discussion. The perspective was that in generations before, physical punishment was a very common and accepted way. That's what our parents did, that's what our neighbors did, this is what was the accepted way.
However, with each subsequent generation, parents DID think for themselves and decide to do things differently, as did I. It wasn't social or cultural pressure, my wife and I found different ways.
That said, our parents and grandparents did not have that perspective. Children were to be, and I am quoting my own parents,
"seen and not heard". My parents and grandparents, for the most part, didn't discuss things with their children, they just dealt with things in a physical way, especially when children were too young to be put to work. That was the norm. An older child would simply be put to work. Our parents didn't want us in the home during the day, so things like TV, toys, etc. were not something a parent could use as leverage. We were put to work with a heavy chores list, something long, hard, dirty, and physical.
Do not conflate what was a tempered child spanking from an otherwise responsible parent with that of a drunkard father coming home to beat the children or his wife. Two, very, very different things. The idea of a spanking was NOT to create injury, but create an emotional event tied to an undesirable behavior the child did, let it burn into their brain as something they would never do again. I know, in 2023, these concepts may be unacceptable, foreign, and hard to wrap one's brain around because it's no longer accepted practice, but back-in-the-day, you were actually looked down upon for "not having control" of your children. If a kid acted up in public, absolutely it was
expected that a parent stop what they were doing and spank their children right there, right now, in front of everyone. If they didn't, that parent would be talked about as a "bad parent".
If anyone had the courage to walk up to a parent, at that point, and say something like,
"I am calling the police! You are a horrible person and parent. You should have your children taken away from you!" Believe me, the rest of the people witnessing it would take that complainer and shut them down right now. Why? Because even having those sorts of thoughts and expressing them would be meaning that every other parent there was going to take offense, those were fighting words, if not, they would have chastised that complainer horribly. It wouldn't have been good for the complainer, and everyone else would have defended that parent.
Perspective matters. That was my world growing up in the 1960's, 70's, and 80's. No, I don't think we had "trauma" from it, it was just the way things were. It was very different. The parents who spanked their children, they're dead, are grandparents, they no longer have small children to deal with.