you may want to do a little more reading on the subject then. no one is saying cannabis is a cure all but there are clear cut cases where it did cure disease. ignoring this is simple ignorance.
personally i know of a few people here in thailand who had huge changes in their life after starting a medical and controlled dose of properly made cannabis oil. a couple even had improvements and saw remission from a tumor or cancer.
the effects cannabis has on glaucoma suffers is yet another example of the well documented benefit.
but hey.