I'm probably being a bit facetious...a bit
I put what he did into the same cateogry as pedophelia. There are some things that are so vile, so completely terrible that I just don't know if a valid human being can ever be coaxed out of the monster.
But do I really think he should die for what he did? Well, if we're going to extend to him a second chance, then I think he should be watched, very carefully, for the rest of his life. He's not right in the head, and I don't know if that goes away just because he got caught. If I'm still around when he finally goes to hell, I won't mourn.