Most serial killers are seriously deluded, in other words, totally insane crackheads that think they do stuff for reasons that are made up of 95% complete bullshit. Some of them are so insane that they do it for what they call “fun”, they do it because they like it, and some (in my eyes the most seriously insane crackheads) do it because they believe it helps their victims. I wonder how one human being belive it has the right to actually decide whats good for another human being. And espescially how can a human being kill another human being based on his/her beliefs. What made these people known as serial killers act the way they have done? It’s often said that child molesters where molested themselves as a child, but it’s quite hard for a living serial killer to have been killed by a serial killer when he/she was a child, so what turns these people into the monsters they become? I believe that if a childs childhood is incredibly lacking, the child will evolve a distrust in the kindness of the human race, and this can start the process of insanity overtaking the mind.

Is it impossible to stop?

No, according to crimelibrary there have been several cases where the Men/women actually turn themselves in to the police, some even expressing remorse over their actions.

How to eradicate them forever?

I don’t think its possible to remove serial killers completely from society as there probably are quite a few that are still working out there, roaming free still. And to minimize the size of a newer generation of serial killers it’s important for adults to remember to take proper care of their children.