The true irony of your statement is that you actually want a nanny state more than anyone. You think it's the government's job to continue raising your children for you after highschool. If you do a good job as a parent your children should understand the dangers of explicit substances. Because legal or not they will be confronted with the choice at some point in their life. 

We've had this conversation indepth before, and you seem to forget my anecdotes. Right out of the gate you have turned to your insults. You know nothing about me, nor do you care to. 

Your kids probably will turn to substance abuse because you have failed as a parent to explain to them the TRUE dangers of drugs (addiction). Once they go out in the world and begin to understand that your narrow hard-liner views are not true (drugs are "bad for you", evolution is a "lie") their morality and trust in you will unravel like a thread. They'll throw the baby out with the bathwater. I've seen it happen over and over.