In my opinion, divorce should never be an option when you have children, (except on rare occasions,) because divorce doesn't necessarily constitute happiness.
When children are forced into a divorced situation their emotions are forever split in half. Children never stop trying to decide who's right and who's wrong, and who's side they are on at any given time.
In my research, I have discovered that not only are emotions split where the parents are concerned but sibling fights erupt over who is on who's side at different intervals.
When two people are considering divorce my guess is that they are completely unaware of what they or their children are going to be in for.
Our children do not deserve to go through the hell that a divorced situation so often puts them in.