We are not barbarians. We are a civilized, scientifically literate society. Substance addiction is an illness--a disorder of neuronal receptors and neurotransmitters. Would you think treatment for lung cancer, or COPD related to smoking should be limited because these are diseases also caused by lifestyle factors? It is true that the addiction treatment we now have can be costly, and is of inconsistent effectiveness. But we are just beginning to learn the neurophysiologic changes that occur in chemical dependency. If we are ever to develop more effective and economical methods of treatment, these patients must be evaluated, and their needs attended to as thoroughly, and as humanely as possible. Not to mention, what we learn about the pathophysiology of substance abuse may help us understand other illnesses, such as mood disorders and degenerative neurologic diseases (like Alzheimer's and Parkinson's.) But we will never learn anything, and we will debase our society if we just throw these people away.