Well I can't drink because it nearly killed me and it would destroy my chances of every working again but I think you have a very good point. I think there are certain compulsive personality types which can get more easily dependant on thinks than the regular person. I might see if I can find some open access reviews of the literature and do a post on it - I know there are studies on it the only problem is most of them are behind paywalls if you don't have academic access and you don't get that unless you are working.