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.
...
If you asked the average man what crime Goering, Ribbentrop, and the rest are to be charged with at their trial, he cannot tell you. Somehow the punishment of these monsters ceases to seem attractive when it becomes possible: indeed, once under lock and key, they almost cease to be monsters.

George Orwell, "Revenge is Sour"