Why is one legal and okay, even in the bible, but the other, which is a plant that grows wild in vacant lots, so horrifically predictable and dangerous that you are willing to usurp an individual's very freedom to force your "wisdom" to correct that individual's life? You are morally out of line regardless of whether it is alcohol, pot, cocaine, or any other drug.
Diogenese, if YOU had been around when I had my alcohol problem and tried YOUR cure, you would have STOOD IN THE WAY OF THE LORD and denied me the powerful connection I found because of the challenge He presented to me -- not you, Dio, but ME. You are also advocating doing the same to others, to stand in the way of how they deal with challenges in their path before God, and to which ONLY God holds the answer.
You are presumptuous, morally presumptuous. TEND TO THE BEAM IN YOUR OWN EYE before you will create hardship and strife for people you presume to be morally "helping."
Because humanity has a ten million year old association with it and decided to keep it.
We have no obligation to be "fair" to other drugs. Given the serious damage that Alcohol and Tobacco does, a person would have to be nuts to wish more death and misery on the people.