He was mentally ill, as are many people who live normal lives. Where do we draw the line?
He had psychopathic disorder. I think we're all aware of that.
I don't blame people for some of the strong reactions, given the emotive subject matter. The number of children killed, and the way in which they were killed and tortured, combined with one child's body still missing and the killer refusing to cooperate.
I lived not far from Saddleworth, and knew of friends of friends who were connected to the victims families, but I don't think you need that, or any, connection to be affected by such notorious and heinous crimes.
I'm glad they avoided the death penalty, and Brady wasn't allowed to die during his hunger strikes. It didn't sound like he/they enjoyed their time in captivity, far from it.