What to do about self destructive drug addicts is one of the thorniest moral issues of our time. On the one hand, we recognize that they are people just like us who have a disease, and we believe we should attempt to cure them, or at least alleviate their symptoms. On the other hand, there is always the issue of self determination. If human agency is to have any meaning, it means one should have the power to choose the time, place and manner of one's own demise. I have neither the right nor the responsibility to prevent another person from choosing to end their life. I believe that most of the people who take these drugs are well aware of the consequences, and they are, in effect, choosing slow (and unpredictable) suicide. Who am I to say they're not allowed to make that choice?