I can only think one real reason why alcohol is legal. It makes a lot of money and the people who make alcohol are old families. By old families, I mean families who have been in this business of making alcohol for many generations and over the centuries, they have, with the use of their wealth, embedded themselves firmly in the seats of power. So, what do you do when you are securely in the seats of power? Take care of the family business, of course. So alcohol is legal.