I regret the times I've been mean to people... It's fine to pick on people who can defend themselves and deserve it. Some people don't deserve to be picked on who I picked on, so I don't do it anymore.
When you're not involved, other people's unhappiness seems to be about the funniest damn thing on earth because you think you can solve it, that you are God, that you are above this, and that their unhappiness is just such useless toil and agony. If it's you, it ceases to be a comedy.