I think 'Scarface' is a great film, but if you have a character like Tony Montana, you don't identify with him at all. I think it's very interesting instead to identify yourself with a character you don't like all the time. You can create a tension between the fiction and the viewer. You force the spectator to wonder about his actions.
In movies, it's so easy to have this 'boom,' to kill, and I think that's inhumane.