When tragedies like this happen, we often wish the shooter hadn't killed himself for two reasons...
1. We want to ask him, "Why?"
2. We want to see justice done.
But there is no "Why" that can explain, justify, excuse, or soften our judgement of such villains.
And there is justice. Eternal and inescapable justice. When a servant has served his master so well as such a man has served Satan's purposes, he will reap an eternal reward for his specific kind of faithfulness. I do believe that.