Interesting thread. I have about 120 dives over four years, got certified in Monterey. By a funny coincidence, I am doing an AOW class in Catalina in two weeks with a bunch of divers (two of whom are my friends which is why I am going, mostly to be social and have someone to dive with for once) who just did their OW 2 weeks ago, so these AOW dives will be their 5th dives and up. The instructor let me join the class after strictly (but nicely) asking that I be careful not to impart any bad habits to her students. (Translation: shut up about the fact that I sometimes (cough) solo dive the dive park in Catalina. [But i stay fairly shallow when I do.]).
The main reason I'm doing the AOW class is because they're doing a night dive (which I've never done, so that will be neat and I've wanted to do one for a long time now) and because I think it will be interesting to see what gets taught in these classes. I don't actually think I'm going to get a bunch out of it because it's eight divers each of whom has only their O/W dives, and me, diver number nine. It is a somewhat startling revelation to me that people are going to finish this class, be AOW ---- and still have less than ten dives.
My take home is that AOW may teach you something, but the fact that dive operators are requiring it sounds like so much BS to me. The fact that you're AOW says nothing. The fact that you're not AOW also says nothing.
People really require AOW? My diving is limited to Catalina, Monterey, and Hawaii --- other than my C-Card (which they don't even always ask for), nobody's said "boo" to me about being AOW, ever.