I didn't mean to imply it wasn't sometimes worth it anyway; I apologise if it read that way.

I just meant that you shouldn't be surprised when irregular/unpredictable access to something makes people eager to take every opportunity, and that it's a factor to consider in your strategy.

I think a big difference with the AA is that usually the people going there have decided they (on some level) want to stop drinking, rather than that being an externally imposed restriction.