Please think again when you say it does nobody any harm.
Its well documented, that MJ coming from Mexico does a great deal of harm. You must think of the entire production process. If it were legalized, it would still do people harm. Its been well documented, that doing enough of it will just tune out your senses... Making you a "pot head" and a lazy ass, that I don't want to have to support when you decide to live off the government.