How about the fact that weed can help some people who suffer from mental illnesses? I myself suffer from bipolar and havent been on the site for a while because of a short hospital stay, but regardless of what certain "professionals" might tell me, I will carry on smoking it. Why? Because when my mood is high it helps bring me back down to earth, when my mood is low it brings it up for a while, helping me think through my thoughts more clearly, and when my mood is 'normal', hell, it just feels good. I have stopped smoking weed for a few months before to see what effect it would have on me, and I plummeted into the depths of depression like I never have done before. If I smoke a joint every couple of days, then I hardly ever start acting like a fruitcake.
Weed helps me beat the illness that has no cure.