You are arguing against a position I did not take. My sole point is that hyper-permissive individualistic libertarianism is inappropriate in a cohesive society. Your health, your success, even your happiness; all affect me. We all depend on each other. As such, it's simply not correct to say "it's my business what I put in my body".

"No man is an island entire of itself; every man is a piece of the continent, a part of the main; if a clod be washed away by the sea, Europe is the less, as well as if a promontory were, as well as any manner of thy friends or of thine own were; any man's death diminishes me, because I am involved in mankind. And therefore never send to know for whom the bell tolls; it tolls for thee."

Sugar, alcohol, and sitting have cost society more than meth, yet no one is going to go around policing people for those vices.

Education and positive incentives are the better solution.