Personal anecdote, hs.
Love the question, BTW.
My paternal grandfather wasn't too close to my father.
Good man, but saw little use for feelings and communication.
I suppose that had something to do with the way he was raised.
My father tried to improve upon that.
I know that he did.
I know the relationship I have with my son is much better, more intimate, than the one I have with my father.
So I guess each generation learns from past mistakes and improves.