I was until recently. My tank is a 75 gallon reef, SPS, LPS and Soft Corals, snails, and hermits. If I had room I would have one reef with fish, and one without. I like it, but really I only did it because of peer pressure (as lame as that sounds) I got tired of explaining to people that I had no fish in my "fish tank."
Now I have several fish, and I enjoy it, but it is more work and I have to deal with the fish not being model reef citizens.