[gogeo]

That's an already-existing cost. There is no evidence that illegal drug use would go up, as mainly those who want to use are using anyway right now...

This assertion, of course, contradicts 3000 years of human experience...but go for it!

[antiRepublicrat]

This assertion, of course, contradicts 3000 years of human experience

How? Our experience is that banning drugs only creates crime and exacerbates the problem of the drugs themselves. It doesn't result in a reduction of drug use. That is unless you have a totalitarian state where the people have no rights, in which case your drug prohibition might be successful.