All of your points are born of the flawed assumption that it is ethical to take away people's freedoms because you think you know better. Even if you DO know be

All of your points are born of the flawed assumption that it is ethical to take away people's freedoms because you think you know better. Even if you DO know better and could PROVE it (which is never guaranteed in theory OR in practice -- see: FDA, USDA), I would never support coercive measures. It's about as moral and effective as outlawing suicide. The practical arguments are already lost. There were a lot of well-intentioned common folk and bureaucrats who think JUST LIKE YOU and tried something called Prohibition, and it didn't work. Same with the drug war.