And in the end nothing changed. Your friend is still dead and your still angry about it. Why would motives, confessions, etc make you feel better? Even if you knew you'd have other reasons to be angry about it. Sorry for sounding blunt or insensitive (I'm not trying to make you feel bad or anything, I don't want to do that) but I know I'd be upset no matter the consequences. 25 years...50 years...what's the difference? It won't make the pain go away, just induce a sense of gratification for revenge.