Originally Posted by Wonderful Monds
Contrary to popular belief, our justice is not a tool meant for exacting revenge. So, no.
Deterrence certainly IS part of the goal of the justice system, so he should be held out to show that you will be given a nice, long time in jail to think about your actions if you punch someone and kill them. I think a dozen years seems about right. He'd still be under 30 when he gets out. Not a bad deal for killing someone, really.