Alcohol Civilization

I've got a new theory as to why alcohol is our preferred drug: it makes people gregarious. Most of your other drugs like marijuana and opiates send people off to dreamland. They lose interest in people around them. Alcohol allows people to be in close confines with people they ordinarily couldn't stand without starting a fight. Mostly. No wonder every movie with an office scene has a guy pulling a bottle out of his desk drawer. At 4% I suspect alcoholism is our number one medical problem, but without alcohol our civilization, such as it is, could very well collapse.