But the Drug War has little to do with the consumption of drugs and everything to do with the Delivery, Transportation and Sale of Drugs.
Walk up to a Cop and say "Hello officer, I am high on LSD!" The only thing he may do is pat you down and let you go if you have no LSD on your person.
Or you can get a sheet of LSD and say "Hey, look what I have officer!" The next thing you know you will be doing 20 Rodeos in one of those prisons they talk about in the movie Office Space.
So you're OK with free market trade in Oxycontin? What about Vicadin?