The point of doing parenting interactions is so that when your sim ages up to YA, they'll get "character traits." Yes, there are "positive" and "negative" character traits, but there's actually no "good" or "bad" judgement of your parenting based on the traits your child sim gets. You can purposely try for negative traits if you want. It can be great for storytelling, actually. For example, if I have a Mean child sim, I can actively try to parent that kid so that they age up with the Insensitive or Argumentative trait. And of course, the kid can do interactions on their own that influence their character traits; the parent doesn't even need to be involved.
As for aspirations, the Super Parent aspiration does require you to have one child age up to YA with 3 positive character traits. But it's really not hard to achieve at least with one kid. Your other kids can be as awful as you want. ;)