I have asked this to many people but haven't yet found a satisfactory answer. The moment you mention that someone does pot, the entire crowd sort of shudders. What is it really about marijuana? Are the effects that everyone warns about purely medical and health related or is it laced with societal prejudices and taboos? From personal experience, smoking cigarettes for a few days alone has done more perceptible harm to my body than smoking occasional weed over few years have. Not to mention that thousands of people die from nicotine induced cancer - keeping aside the many lung conditions, mouth infections and ulcers people often develop. Contrary to this, I have never really heard about anyone dying from weed. And now we have talks about medical marijuana to treat cancer. In this context, how does cigarette get sold legally while marijuana gets swept under the Schedule I drug category along with heroin and coke? What makes weed more dangerous and harmful that nicotine?