Funny thing about Kill Bill, it's actually a movie within a movie universe, which explains some the strangeness. The Tarantinoverse is already more violent and over the top than our own, so it makes sense that the Tarantinoverse's Tarantinoverse would be even more so.
I love him though, even if he is wildly punch able. Pulp Fiction is my favorite by a long shot, but I loved Django Unchained, Reservoir Dogs and Inglorious Basterds too. Didn't care for Kill Bill, haven't seen Jackie Brown or Death Proof.