I recently read about Jesse Pomeroy a murderer from the 19th Century (i think), he took great pleasure in torturing boys/girls until he finally killed them, I think all in all he killed 3 children. Now he was supposed to be hanged for his crime, but because he was 14 at the time, there was an uproar and protestors said that he shouldn't be hanged.
Now I don't beleive that he should've been hanged but the alternative for him was to spend the rest of his days in solitary confinement, he ate alone, excercised alone and the only people he seen was the prison guards.
Now I don't know about anyone else but I would rathe be hanged.
He spent all of his adult life in prison til he died at the age of 72 in prison.
I think because it was back "in the olden days" no one sought out to find out why he did it. I think that would be quite interesting.