So much money is wasted on enforcment and so many lives are destroyed(go into prison,devastate the family and then they come out either raped or worse than ever).The actual prohibition of it is knee deep in racism and big money intrests.
There is MASSIVE mis-information about cannabis and the old demonizing myths are still around even today.
Unfortunatley,even if a state legalizes it,the fedral government will overide state law(like it has in california with medical use).I remember talking to a security guard who was from canada and suffered panic attacks.He had a strain of cannabis that helped him greatly...
I would rather smoke a prescribed medicinal herb than stay addicted to benzodiazapams(Klonapan).
Try once,fail twice...