I think that when good parents do their best and the kids still have problems, you just have to assume that things might have been a lot worse without the good parenting.
And no matter how wayward a child might be in youth, that early training sticks and comes back to them later.
There are so many negative things that influence kids these days that I sometimes feel very sorry for both children and parents.
Who would think with so many modern conveniences and advanced technology that life would be more difficult than ever?