I enjoy it, I love to swim and to beable to do the diff work outs that you do in the water arobics makes it even better I say try it, its not for everyone but give it a try for a month or so and see how you like it,
I have never tried water aerobics, but I've seen people who have, and they've had great results with it. It's excellent exercise because the water acts as a "cushion" for your body, which makes for low impact.