people need guidance all the time, when you as a noble so lenient to a villain, there will be no good deed, they will go worst and worst
aa punishment doesn't meant it's cruel. in fact it's the best way to prevent more crimes. i'd rather had 1 guy (villain) getting a major punishment but nobody else try to copy him instead of having 100+ of copycat of his villainy because of your half assed "punishment"
it's already happened in murica, go read the news