Most of us marry with the best of intentions. Sometimes that just doesn't work out. We shouldn't slap a #fail label on people who divorce. Let's have faith that they'll do things better the next time -- or maybe the time after that.
It's wise to be sure the divorce is necessary, but if there's no hope for the marriage, letting go as gently and as quickly as possible will save the sanity and the assets of both partners and their children.
There is one presumption that seems to be missing from the body of legal presumptions in family law: the presumption that equal custody timesharing is appropriate for children involved in divorce and paternity custody disputes.