Would "we must force parents to keep their kids in situations where they (the parents) believe the children are being abused, to make sure the kids grow up tougher than their parents desires would result in," be a solution anyone would actually want?
I think you're intentionally using term the abuse, in contrast to the words I used, to be inflammatory.
But yes, I think it's healthy for my children to experience more suffering than I, ceteris paribus, would permit them to experience, if I were omnipotent.
I'm using the word abuse because I am referring to abuse as distinct from the abstract kind of suffering that's impossible to have any opinions for or against because it might include hiking long-distance. ;)