I will keep this post short and to the point. Feel free to comment.
The brainwashed think cannabis is illegal because it hurts people and kills.
The paranoid think cannabis is illegal because of government conspiracy.
The truth is, cannabis is illegal because if it were legal, it would hurt the profits of the drug companies, would be nearly impossible to tax in a way that is beneficial to the government, and because the government has lied their way into such a deep hole that if they came out and spoke the truth, people would be outraged that they lied for so long and tore apart so many families and lives.
The truth is that cannabis is safe, non-chemically addicting, good for your health (assuming you don't smoke it) and cannot kill you. You cannot overdose on weed. Period. You will not go all psycho and kill others either. Nobody will die or get hurt if you consume cannabis. The anti-drug campaigns are all bullshit.