Why does it seem like when you're single you meet a lot of jerks and bums??

All the while I was single I met a lot of jerks and bums. Even the long term relationships that I had turned out they had no goals. Or they just plain out wanted a woman to take care of them. Now that I'm married, I get all kinds of settled, wise, business men that are interested in me. These men really have thier heads on straight. Why in the world is it like that? I wonder where these guys were when I was in the dating pool? I guess this is temptation at it's finest. Has this happened to any of you too?