What was Amy's problem? I have no idea, I didn't know her. I certainly don't buy the ideas of AA either, at least not as sacred rules. I think abstinence works for some people(because or in spite of itself) while no so much for others.
I find it hard to empathize with the idea that people become addicts to the drugs per se, maybe because I've done most of them(at least a few times each) during college, and never become an addicted. Nowadays I wouldn't even try again any of them again because there's no point. I even rarely drink nowadays and haven't binged in years. If anything, I'm addicted to work. :)

That's why I believe drug addicts problems are not the drugs, but that they haven't learned to deal with their emotional problems in a constructive way.