The only generalisation about "most parents" that convinces me is the one that says most parents are, on the whole, good parents, and most kids are good kids, on the whole.

There are too many exceptions to that, but they are exceptions.

One problem is when parents and teachers imagine that they are the main influence on their kids, past a certain pretty young age. They aren't, other kids are. The important thing is to be around to help pick up the pieces and stick them together again. Not "quality time" when it suits us, availability time, when we are needed.