CannibalSmith - Post a comment

Because we don't kill people who killed people to show it's wrong to kill people. We kill people who killed people to tell others "See, this is what happens when you kill people. If you kill people, other people will kill you." which basically grounds down to "If you gonna mess with us, we gonna mess with you " which in turn comes from the Bible's "eye for an eye, yadda yadda" phrase.