I'd like to speak on behalf of the children in the "stay together for the sake of" scenario. Please, if you're that unhappy...leave. You are not doing your children any favors. I was there myself from birth to age 8. Stay FRIENDS for the sake of your children, certainly. Teach your children about commitment in a different lesson..not one that shows commitment in the bad light of a miserable marriage. Seems more like a prison sentence when they see it that way.