It also depends on a person. Some people are better of as single, they don't want to be tied because they think allowing someone to take control over him would make him a lesser person. Yes, there are kinds like that. And when they think being committed would mean being dominated. I know it isn't quite that but that's how it is to some. That's why they are afraid to have a partner. Although in reality it shouldn't have be that way. As for me, I prefer to live with someone, to stay married till the end. I have no regrets as things are going just fine. Not perfect but good enough.