I have always had freshwater, never saltwater. While the fish look awesome, that tanks they are in don't. I hate the live rock, and I think corals are ugly so I simply don't do saltwater.
I had someone tell me that because I don't do salt water that I am not a true aquarium hobbyist, and that I know nothing about fish because freshwater fish don't require anything. Sure, you tell that to my puffer who gets extremely temper-mental over his ph, food, lighting, and filtration. No, he's not a hard fish to keep at all...