Agreed. There are many useful purposes for MJ. My best friend is a smoker, but it is the only thing that helps him deal with his severe ADHD. Not even "fine" prescription drugs like Adderol or Ritalin help is his case, they just make him an unbearable [censored]. Among others, glaucoma patients, those who suffer from severe stomach ailments, etc...
It's not for everyone, but isn't that the same with alcohol, tobacco, etc... And those two don't even serve any medcinal purposes at all. (take away the old adage, "glass of wine per day helps the heart)
Also, it's good for getting really stoned and chilling a whole lot!