I really like the fact that when people accuse you of pulling broad generalizations out of your ass you respond by pulling another baseless generalization out of your ass.
You are making wide, sweeping generalizations at random without any kind of proof or evidence to support your theory. I think you'll find that most sexual deviancy is really kind of random. This is also why serial killers appear at random, a good percentage of them with good upbringings. The fact is that nobody really knows why serial killers do what they do because they're individuals the same as everyone else. Actually criminal investigators believe that there are a lot more serial killers prowling neighbourhoods and murdering victims than we give them credit. I'll give you a good link:
http://www.crimelibrary.com/serial_k...sconsin/7.html
The only reason I know this is because when I was making decisions about my future in highschool I was actively researching a career in forensics and law enforcement (hopefully being a detective, eventually). I'm glad I didn't choose that path (graphic design is such a cushy career). One of the things you read a lot about in these serial killing stories is that the neighbours of these killers are shocked, and that the men charged with the crimes are typically very normal looking and acting. And, get this, some serial killers actually do feel remorse for their actions, but feel compelled to do it.
But seriously, stop making broad generalizations based on nothing but "what you maybe heard on TV or somewhere."
Oh and for the record IronPlant, I'm actually really good at talking to girls and may be quite possibly the world's greatest uncle.

