Prison

I've never understood why people are so happy when someone is convicted.  Mainly of murder.  I get it, the person (they think) took the life of someone they loved.  But the other person is losing their life as well.  Whether they get life in prison or the death penalty.  Their life is over.  It never made sense to me.  People jumping up and down and crying in joy because someone is going to die.  They're devastated from what happened to them.  But what about the other person's family?  They're being nothing but selfish.  They're making the other family feel the way they do.  It's horrible.  They'er, in essence, celebrating murder.