Addiction is a terrible thing.  It rules the life of the addict, and the lives of those around him.  The addict claims to be concerned about other people, but the truth of the matter is the only thing they really are concerned about is where their next “fix” is coming from.  When someone is an alcoholic, getting the next “fix” is relatively easy – the alcoholic can legally buy (assuming he is of legal age) his drug of choice.  With a drug addict, getting the next “fix” is risky and dangerous; getting his drug of choice always involve breaking one or more laws.