I remember reading that quite a lot of people didn't like Elvis too for his provocative dancing and believed he'd have a corrupting influence on the youth of the time.
In retrospect these things didn't turn out to be so bad after all.
"Those with cannabis dependence at the first three or four follow-up visits experienced significant cognitive decline from three to eight IQ points. This was noted in the persistence of cannabis users and those with cannabis dependence."
You are a free person, but why impose this danger on everyone? You can always skirt the law if you decide so, why make other people in their most formative years dumb?