Not being happy is a valid exuse to me. I do think that all relationships require regular work just like anything else and nothing is going to be peaches and cream all of the time but....You can never under estimate the value of peace of mind. A family friend of ours was married for nearly 30 years. They had 3 children together but after charlie was born (the last baby), things started to go down hill. Her husbands behavior became more erratic and he became more and more controling. Me and my sister babysitted for her and we watched him be verbally abusive. Her oldest son started imitating the behavior and started becoming a little prick. Her husband has always been a little off to me, he has a really bad "little man" complex. Well she finially had enough and left him. During the divorce he hit her with her car, hit his daughter with a hockey stick, pushed her down the steps...all kinds of stuff. Her father bought her a new house, she is now going to start practicing law again and you couldn't believe how much happier she looks. It is like she got a face lift. Her kids came to live with her on their own accord. Jason, the oldest son is going to college this year and his father isn't even giving him a dime for school and he is a millionare many times over. Moral of the story...Happiness is a factor in whether to divorce or not. Some issues just can't be worked out and you should never give up your peace of mind or sense of self for any relationship.