Are you equating smoking a joint with murder, rape, and bank robbery?
Who is the victim in the joint smoking?
What I am saying is, if your stats for crime goes down because something is no longer considered a crime, make more things legal. By the way, maybe those 9 people will disagree with you.
http://seattle.cbslocal.com/2014/02/04/study-fatal-car-crashes-involving-marijuana-have-tripled/