I happen to think you are right Will. My father was an alcoholic, who was able to control his condition as long as he had motivation (his marriage) to do so. Once Mum was gone he simply let it go - which was essentially suicide. I have known so many alcoholics and drug addicts who were braver, stronger people than I am. Some of us have an automatic revulsion, which forces us to reject anything we have taken to excess. This has kept me safe from alcoholism, addiction and obesity - and it has nothing to do with will power. I think that for you and I an accident of birth has made life that little bit easier.