I'm only 5'8" and I have always found my (lack of) height to be advantageous. First of all the smaller you are, the lower the centre of gravity. Good thing. Also, the taller you are, the more likely you are going to break bones when you fall. Those extra couple of inches contribute significantly more to impact on the bones when they hit the ground.
Having seen many instances of breakages, it always seems to be the tall guys!