Violence is as necessary to Qt films as suspense was to Hitchcock. QT’s sense of humor is very black and revolves around shocking the audience. Without the Violence, he could still make great movies but they wouldn’t be “Tarantino Movies”.
And like Carradine said, his films are not about violence but about the lives of violent people. It’s like Steinbeck with the common man.
I could go on but I’m tired. 
