You could almost ask the same question with any other type of sports really. I mean, I think it's a good sport to combine both physical strength and the mind. I just read the rules of how it works, and I don't think it's a bad sports.
As someone who gains great pleasure from both strategy and violence, I actually think this is pretty interesting.
I think they should add boxing to other sports, like curling. You know; to make it actually watchable. Can you imagining boxing on ice--oh wait; hockey. Nevermind...