@somequestions
I was not talking about criminals in general, I was talking about serial killers. People who commit other crimes are not psychopaths in a lot of cases, not even everybody who kills someone is a psychopath. And I don't think there is anything wrong with calling serial killers monsters. There isn't even anything wrong with calling psychopaths monsters (and most of them never kill anyone)- I had a couple of them in my life and that is exactly what they are.
And I agree, it is important to look at the differences and why criminals do what they do, but not really when you are dealing with a psychopath. They will manipulate everyone around them and lie about everything and they will do this to psychologists, psychiatrists and profilers as well. The only thing that is important in those cases is to understand that they are psychopaths.
But yes, there is one thing that I would like to understand as well, like I said, most psychopaths never kill anyone (a lot of them commit all kinds of other crimes though), what is wrong with those who do? I still don't think you can blame bad childhood, etc. for it, it's probably more about the brain and the differences between psychopaths and their brains that turns some into serial killers. Maybe it's like a spectrum. MOO.