Yes, if you run out of money. That is the first assumption which doesn't hold true for the majority of addicts (who are at least moderately functional, as opposed to the dysfunctional picture you're painting here). Addiction is a complicated array of factors that either push you further into it or do not, and a lot of it has to do with your social safety net. In the average american case, I'll admit this appears to not be there. In places where this isn't so much the case, prospects for long-term addicts are much, much better (look towards the more permissive countries in Europe for evidence on this).