I believe once the couple has figured out that they absolutely cannot be with each other they should get out of marriage as quickly as possible without creating too much drama WHETHER or not there are children involved. Watching parents fight for years and years is so much more damaging and heartbreaking than the divorce itself. I don’t believe in staying married for sake of children, that’s just not right and who knows the couple won’t break off their relationship later in life when their kids are all grown up. Adults don’t take parents’ divorce easier than younger children do!