Ey man, if you want to understand drinkers you should read Allan Carrs book 'easyway to control alcohol'.
Its actually a book to quit drinking altogether and become a ex-alcoholic.
He carefully breaks down the alcohol trap 90% of the population falls in. His philosophy is; give people the understanding that there is no advantage to alcohol and TONS of disadvantages removing there desire to drink.
You can probably skip big parts of the book. Personally after I read it, I had my last drink and will never drink again. Thats how well he gets the issue and breaks it down.