Great article...thank you for sharing! For me, it puts a little clarity into something he said to me in a clinic (probably about 30 years ago, as a young rider) that I will never forget. Unfortunately it wasn't anything nice!
Take a look at the NIH's page on the genetics of alcohol disorders. It's just a brief summary but it should provide a sounder basis for thinking about addiction disorders:
You may be aware that a similar interplay between genetics and environment causes some people to develop various types of cancer, which you seem to consider a more legitimate 'disease.'
Still trying to edumacate the unbelievers, eh? Frustrating, seems that people only want to believe what they have personally experienced, contempt prior to investigation being the human norm. Great article thought and kudos to COTH for running it.