All drugs are not inherently "bad" (few things are), and furthermore, even if they were, the whole concept of the "nanny state" bugs the hell out of me and seems to go against everything America is supposed to be about. If people want to fuck themselves over by overindulging, let them. They're going to do it anyway, whether drugs are legal or not.
So many people smoke reefer in this country... I find it hard to believe that a significantly larger amount of people would smoke if it were legalized. Nobody gives a fuck about the crooked laws in this country if all they want to do is get a little high.
also, look at this: