The problem people have I suspect with your statement is the old thin end of the wedge thinking. You don't agree with whatever it was and think it should be banned. Once that happens then someone else comes along and finds something else they think should be banned and the precedent is now set. Just about any kink you can think of will have a band of morally outraged campaigners up in arms.
The acts they are rping are consensual, they are adults, no one is really being hurt.Repeated studies have found no causal links between violence in video games and real life violence. Banning it here will not stop those people having those fantasies it will just remove a safe outlet to live them out.