Well I'm not a cave diver as of yet, however, I plan on going through the training classes and all the motions to receive that cert. What I know , for me, Plain old open water diving in depths under 100 ft has become rather boring, I enjoy a more technical type of diving, for me planning the dive is almost as much fun as actually diving it. I like the complexities of technical diving, and of course the toys involved. I've seen most of the marine life that I really care to, not that I dont become exited when I see something large or rare, but when I go looking for fish I plan on shootin' em'. But all in all thats just me, if diving reefs checking out marine life and coral is your cup of tea then more power to ya, all of us have our reasons for diving.