I like the idea of a legal framework for drugs. We can put high taxes on them just enough to undercut the illegal drug trade (it's not perfect as there are even operations for smuggling cigarettes to avoid taxes) and spend that money on services to help people quit. As long as an individual is not violating someone else's rights, they can do whatever drugs they want. If someone commits a crime while on drugs, come down on them like a ton of bricks.