Overeaters Anonymous and Debtors Anonymous assist people who cannot stop dining and spending. Some do it for self-medication. Some for enlightenment and others because they want to have fun. Naturally, this individual freedom must be tempered with personal responsibility. Drugged drivers, for instance, deserve prosecution.
Alcoholics get treatment while drunk drivers receive stiff fines or jail time.
America needs a similarly nuanced drug policy. People who harm or endanger others while high should be prosecuted. Addicts need therapy. Abusers should be steered toward moderation. And conscientious recreational users should pursue happiness.