"Good Riddance" was my first reaction too. And my last word on it.
But in between, if I step outside of emotion and use purely intellect, I truly believe people like him are born with congenital brain damage. Whatever part of the brain is responsible for empathy and a conscience is missing or completely non-functional. So it's possible they are not morally culpable in the way the rest of us are, who choose to do wrong when we know it hurts others. Nevertheless, people like this are so very destructive, they need to be scrubbed off the face of the earth.
That's why I believe in the death penalty at the point just before a capital crime is committed, carried out by a would-be victim who had the foresight to be armed and trained. (I'm undecided about government carrying out death penalty. I used to be for it but I've discovered too many cases of prosecutorial misconduct and innocent people on death row.)
This brain damage is the difference between being human and being something less so I have no problem calling such people animals. But you'd have to specify which animal. Only the most loathsome cockroach for example, would I compare him to.
But declaring he will rot in hell for all eternity? Well I have said the words myself ("He's in Hell where he belongs!") But it's rhetorical - I don't actually presume to know what God has done with him. Maybe he repented on his deathbed, nobody knows what's in the mind and heart of another. Or if my brain damage theory is true maybe God doesn't punish him at all because the guy had no choice in the matter. God made him how he was. Maybe he was a tool being used by God for some purpose. (Just for the record, I don't really believe that, but I'm not going to presume to know.)
In any case, we need have no sympathy for such "brain damaged" people. They are very good at getting what they want in life at everyone else's expense, due to their complete selfishness. Our approach should be they are a cancer within humanity and should be eradicated by sheepdog citizens at first defensible opportunity.
Thank you to Rich for your summary on the world's various religions!
So now stepping back out of my intellect and back into my visceral reaction: GOOD RIDDANCE.