The whole idea of revenge and punishment is a childish day-dream. Properly speaking, there is no such thing as revenge. Revenge is an act which you want to commit when you are powerless and because you are powerless: as soon as the sense of impotence is removed, the desire evaporates also.
I can't imagine everyone on the planet would want to hear something from me. If I thought they'd listen, I'd probably ask them to try to be nicer to each other, to try to be less scared of their differences.