Sure, in fact, why don't we legalize meth while we're at it
Jesus Christ, Meth =/= shrooms.
Meth is a paranoia-inducing highly addictive substance made from stuff like battery acid and cough syrup. Mushrooms are a natural thing. I'm not saying that they should be legal, but stuff, don't compare them to loving meth. What are you, a middle-aged suburban soccer mom?
And really now, if certain drugs were legalized, people who haven't used them yet probably won't. If weed was legalized, people who were using it would just keep on using it, and people who weren't probably wouldn't. A good amount of people would probably start using it, but chances are, it would be a marginal amount.