I would stop worrying about what you think other people think of you (or think of other people) and start paying attention to what *you* think of you. If you are dissatisfied with your career prospects and health, maybe you could work towards changing those aspects of your life? Maybe take a class, something that would both further those goals *and* let you meet other people?

I don't think it is true that most women want to marry a man for his money and then divorce him when they are bored. I can see why it feels that way, just like it feels like most men want to bed a 10 and then never call again. It's how a few people might behave, but probably not the kind of people you'll run into.