I am sixty one and unmarried,why do women seem to gravitate to bad or evil men ?

A big part of why I'm unmarried is my fault , but has nothing to do with being mean or evil. I'LL never understand why people like Scott Peterson, the Melendez brothers and many others can find a women many times, when they're actually in prison already. I think this is bizarre what the hell are these women thinking ? Is there even a logical answer?