Originally Posted by Zed
That's assuming it's done to bring back said girl, and I seriously doubt that revenge was ever based on the assumption that carrying out an act of vengeance would somehow reverse time and matter to a state prior to whatever act it was that caused this feeling in the first place.
Most of the time it's just to sate anger and the feeling of revenge, not to fit reason or logic into it, when reason and logic already failed in whomever it was that wronged them in the first place.