Darkman

I liked this movie because it showed the consequences of being vengeful. Peyton Westlake was a scientist who experimented with artificial skin and hoped to perfect it to help burn victims. When he was mutilated and burned beyond recognition by Robert Durant. He turned his experiment into a weapon of revenge. He would disguise himself as his enemies and turn Durant's criminal organization against itself.

As he goes through this Westlake becomes Darkman. He no longer cares about helping humanity, but only about getting revenge. His soul loses everything that made him a man, and in the end he's a killing machine. He's just as bad as those who made him that in the first place.

But that's why I liked the movie. It doesn't glorify vengeance seeking, instead it shows the reality and consequences. Seeking revenge doesn't just hurt your enemy, it hurts you as well.