I fortunately don't have a ton of direct experience in this area. But spent alot of time with a recovering addict/alcoholic and drug counselor.

Maybe his point of view was out of date, but I recall that he saw kicking any of these problems was something that came from within. You had to want out strongly. My friends moment was when his kids didn't want to see him.

People shun addicts to survive, not out of cultural conditioning. The addiction comes first, and the addict will hurt anyone to get it.