[Z]

I don't think you could ever rehabilitate somebody so badly messed up; there would be no point in trying. Plus, every person is an individual, somebody so crazed would more than likely have been affected by a few incidents, or one big one (i.e. the war thing mentioned earlier) that set them off. People are individuals, there's not really much of a correlation between one person's experiences in life to cause them to be a nutjob and another. I think, in cases like this, the death penalty is necessary.