Hell why don't we put gov't tax on psuedo, coffee filters, camp fuel, etc...all the stuff used to make meth. I mean I may need a quick pick me up while at work.....let's make it legal.
Actually, your doctor can prescribe methamphetamine to you if he thinks you would benefit. Same with cocaine, heroin and other opiates.
The things that are most controlled are because they purportedly have no medical benefit and are highly addictive:
http://en.wikipedia.org/wiki/List_of_Schedule_I_drugs_(US)
This of course is debatable. But marijuana is included, as well as peyote, 'shrooms (Psilocybin), licking toads (Bufotenine). You know, things that cannot be easily controlled and sold by chemical companies for a profit.
The 9 our of 10 started with pot argument is weak though, because 100% of the sample you see as an LEO are in trouble with drugs (if they weren't they wouldn't be talking to police). There are vast numbers of illegal users that are responsibly living their lives.
I work in insurance, and 100% of the vehicles I deal with on a daily basis are involved in vehicular accidents. My sampling shows that vehicles are destructive and dangerous. Should be regulate and prohibit vehicles? I admit, this is a bit absurd, but I use it as an example to show that anecdotal experiences are poor ways to express an aggregate.
I like ya Mojo, but I have to disagree with you on this topic.