Did you ever think about the movie not having a bad ending? Did you ever feel bad for Judd? Lastly did you like the book ending better than the movie ending?
Obviously, Judd himself suffered abuse when he was young, so how could you not try to understand him? And if you understand why someone behaves as he does, how can you not feel some sorrow for him? I think the movie ending worked well for the movie, and my ending worked well for the book.