There's something to add, maybe, but I'm not sure exactly how to say it. It is part of "look for bigfoot, find yourself."
I suspect they run on empathy and emotion more than dry intellect. Show them the respect you'd want your child shown. I hope that doesn't include cutting parts off. If I found one of them dead, the only thing I'd know to do, the only thing that'd be "me" to do, is start digging a hole. It's what we do. It's empathy.
It's that crazy mirror all over again. What we rationalize doing to them reflects who we are. Character. Values.
MIB