I agree that most parents should try to work out their relationship if they have children.
Child rearing is all about self-sacrifice and selflessness.
Too may times parents lack the parenting they needed themselves and are not prepared to raise children and this leads to a divorce.
This is because the Parents are still immature and are still trying to get parenting for themselves.
On the other hand, your Assessment does not even take into account mental emotional or physical abuse, wich is real and happens too often.