Msimon, I do agree that alcohol can induce violence in some people, but it is not the only drug known to do that. Methamphetamine does the same.Alcohol is by far the most dangerous recreational drug around. It is the only recreational drug known to induce violence in some (medical studies not newspaper reports). Ask your local police if they would rather arrest some one jacked up on alcohol or would they prefer arresting pot heads.
It is true that alcohol is pretty bad if you compare its effects gram to gram with other drugs.
The difference with alcohol is, that you have to consume a lot of doses until there is a measurable effect. That is, if you (like most Europeans) posess the genes to produce the enzyme alcohol dehydrogenase (German name). Some etnic groups like native americans do not posess this gene and therefore are much more sensitive to alcohol and its effects. This is indeed a problem and I do honestly not know what to do about that. I have to admit that I do like meself a beer once or twice a month (if the occasion is right), or a glas of red wine in the evening every once in a while. So I would certainly miss that, if alcohol was prohibited. I would much more miss soda though (and that is not healthy for you either). I do prefer my cola and red bull over alcoholic drinks (though they are really bad for me).
That said, there are to many alcohol addicts out there and I do wonder whether there will soon be a treatment for those. Some sort of gene therapy maybe.
Anyway, the average alcohol user does not get drunk every time he drinks. The average user of illegal drugs sure does get the equivalent of being drunk, every time he uses the drug (call it high, stoned, or whatever).
This is why alcohol is slightly less dangerous, even though the substance intself is more dangerous if compared grams versus grams.