I think that to do this or not is very much an individual decision. As I stated above, I did AOW after only 7 dives and I'm glad I did. Here's why.
I don't have a dive buddy who's close. The guy I usually dive with is over 2 hours away and another hour to the nearest dive site. So my dive time is usually done on some of the weekly store dives to local inland lakes through one of the 2 LDS. Here I can just join the group and be assigned a buddy.
I am an official referee for the NRA at pistol matches so I don't have every weekend free to dive, due to these other obligations. I was certified one year ago and even with doing 10 dives in Hawaii while on vacation this year, I have only 22 dives total right now.
I can find time to dive perhaps once per month in Michigan's short diving season. Most of those are one tank dives, although I'm going to try to do more this summer.
I felt I wasn't really learning a lot with these infrequent dives, mostly because when I could dive, I was with someone who wanted to dive, not watch me practice. So practice was non-existent. But I wanted to learn more.
Taking AOW was my way to do it. I was able to practice and learn under the watchful eye of an instructor.
I was able to learn more about buoyancy by practicing doing nothing for 30 minutes other than balancing on a single fingertip. From then on I knew a lot more about using your breath to help control your buoyancy.
I actually learned something about navigation, rather than the brief exposure we had in OW training. I was able to successfully navigate in water where visibility was about 6". I actually ran into the object I was navigating toward, before I saw it. But my navigation was right on the money.
I was able to get below 25' for the first time and feel comfortable in deeper water and did my first safety stop rather than just know that I shouldm do one. This helped me a lot when I went to Hawaii and my first dive was to 97'.
I was exposed to underwater photography and have become addicted. I have since taken the underwater photography class.
So you can see why I feel that it was beneficial, in my circumstances, to do the AOW training when I did.
I was unable to dive again after completing my AOW in September 2003, until I got to Hawaii in January 2004. But when I did dive, I did so with more conifdence in my abilities than I had before. I still realize I'm a newbie and have no illusions that I'm not. I freely shared my lack of expereince with the dive shops before booking them and with the DMs before getting in the water with them.
However, being a newbie just makes me even more eager to learn. That's why I'm going to start on my Master Scuba Diver card. I've talked with the LDS about it have worked out a road map for what I want to accomplish. If you ask me why I need this rating, I'd have to tell you that, for my intended diving applications, I don't need it. However, once again I get to learn under the watchful eye of the instructor while I become a better diver. I know I won't accomplish this even this year, or maybe next, but I'll be diving and learning. And I find it hard to fault anyone for wanting to learn more.
The manner in which I chose to learn may be much different than they way others chose to learn, but this works for me and I'm happy with it.