Honestly, tobacco is only legal because it's absurdly profitable (which is one of the biggest reasons people push for cannabis legalization). Alcohol is only dangerous when consumed in large quantities over an extended period of time. Smoking marajuana impairs judgement quicker and more thoroughly than alcohol consumption, ruins your lungs, forms a habit, and adversely affects brain cells. These are proven facts. "Doesn't kill"? That's straight wishful thinking.