Disease my foot. I have an uncle who was alchoholic who overcame his, without any drugs to cure his "illness", and he didn't get any new found religiion either. I have dated and known Drug addicts. I am pretty sure none of them were doing that due to "Illness" or disease. Its all about self control and mental makeup. Some are more weak than others perhaps.
This disease is an excuse just like people who like to blame their weight on Genes instead of their diet and self control etc.
Kid's Misfortune? I guess him having three different chances to make it, is a misfortune? Yeah, I wish I had those misfortunes