[DiogenesLamp]

Have any evidence for this claim? Seems to me that many legal things are rarely done.

Abortion. 50 million since 1973. And this is another reason why people think you are an idiot.

[ConservingFreedom]

Yep, the legality of abortion (which doesn't have the practical consequences of drug abuse) has made it much more common; on the other hand, the legality of many other acts has left them rare. The evidence is weak at best that people who have been responsible enough to avoid drug use because it was illegal won't continue to be responsible and not let legal drug use drive them out of employment or onto welfare rolls.