It's funny you asked that question. During a recent visit to the Sydney SeaLife Aquarium, I spent a good 15 minutes looking at the jellyfish, and really enjoyed it. The clever trick the aquarium had used was that although the jellyfish where white in color, they had used light effects, so whenever a different colored light would go on the jellyfish, it appeared the jellyfish were changing colors. I thought it was a cool trick. Long answer short, I guess I do enjoy watching jellyfish.
Another way to think about it is that I often wonder how these brainless basic creatures live their life "happily" swimming away!
They are actually sometimes quite fascinating to watch.
They are in groups of all different sizes, but I do not like it when there are thousands of them and that is all that you can see in the water -I find it quite peaceful to watch several floating by as they seem so graceful!