I really don't think that alcohol is addictive, I think of it as a psychological disorder. I mean if you say that drinking a lot of alcohol is bad for the body well that's just the same as eating too much pork or butter or eggs. What I mean is anything in life that is too much is harmful.
Drugs on the other hand is addictive and kills the brain cells making the brain smaller. So all drug users have smaller brains whether one takes small amounts or large doses unlike alcohol drinkers which has a normal brain.