Response to Brycen

Brycen asked the question on his blog:
Is performing art in a sense better because it has the ability to change unlike non performing art?

This question could be argued a variety of ways. However, I believe that it is not better, it is just different. No art is really better than any other. This brings us back to the issue of good art vs. bad art, and there really is just no such thing. There is so much in art that is subjective, that trying to say something is good or bad, better or worse, is a never ending argument.

My question for you is: why do we insist on trying to say art is good or bad?