you aren't forced to do anything, but if you want to win those Rated Warzones you are going to have to play your class to its full potential, that means using your taunts when applicable. It's just the mechanics of the class you rolled. It's like joining Marines and saying, "oh I want to push pencils in admin, but I don't want to shoot people. Shooting people impedes my administrative productivity." Yea, that's not going to fly.