I've known a few people that got involved over the years due to their problem drinking. In one case the guy really did end up having a physical addiction because his abuse of it went on so long before he actually was able to do something about it. I don't think that was the case with the other guy.
But in both cases, what got them started with their alcohol abuse wasn't a physical addiction. It was some pretty fucking serious problems. In one case being sodomized by faculty at his religious grammar school, and his classmates taking up the cause, as it were, and not exactly on his behalf, if you get my drift. That is some pretty fucking heavy shit to deal with when you haven't quite yet reached double-digit years.
Both these fellows drifted away from AA as time went on. As far as I know, neither one of them goes anymore. The guy who ended up becoming physically addicted had a relapse a few years ago during a crisis, but picked himself up and carried on just fine. The other one hasn't had a relapse but also doesn't touch the stuff which is probably a good thing, as his battle with the Catholic Church still consumes his soul.