Simple but controversial question. It's a well know fact that it is less dangerous than Tobacco and Alcohol yet we imprison almost 1 million people every year for simple possession. The government spends billions every year fighting Marijuana yet it just proves to be futile. It is also considered medically useful for over 200 diseases and illnesses.
Ok my intro is somewhat biased
to counter my point
Marijuana makes black people go crazy and rape white women. It also kills brain cells and takes away all motivation and turns you into a pacifist!