The question does run deeper than just "what's right for you", though. There are documented impacts to marriage - both being in one and ending one - to both the participants and the children. For example, married men typically live longer than those that remain unmarried, and children of divorce typically have shorter life spans than those whose parents stay together (though current research suggests that it isn't the divorce per se that causes that effect). I'm not suggesting there is a right answer, but I am suggesting that perhaps this decision, like many in life, aren't always reached in a rational, "weigh all the facts" way, but in a more raw, emotional way.