I apologise for the word 'despicable': as Henwah said, it was harsh, and it was unfair. I'm sorry.
Let me try to explain what I mean with a completely different case. After the Aurora cinema Batman massacre, there was good evidence that the shooter was unable to shoot people that stood their ground and made eye contact with him. No one could possibly blame anyone who tried to run away or who was afraid to make eye contact with the shooter; no one could possibly blame anyone who tries to run away or who is afraid to make eye contact with the shooter in the next massacre. It's purely about trying to understand how people that commit unimaginable crimes behave, how that shooter chose to pour a dozen bullets into one person and could barely graze another, and if that knowledge could save one person in the future that's a precious thing. No one could blame someone who doesn't react in the 'right' way, but if someone can from that information, that's a life saved that wouldn't have been otherwise. That is what trying to understand victims is, or should be, about.