" In 99.9999% of cases it has nothing to do with medicine or treating any illness. "
Oh come on! That's an exaggeration and you know it. It's "medical marijuana" because it requires a prescription.
The f***ing FDA doesn't give a damn about The People. It is owned by the big pharmaceutical corporations! A majority of Congress is likewise owned based on their recent bi-partisan vote to keep the ban on importing drugs from Canada. Note that these same corporations are funding anti-decriminalization efforts all over the country. They obviously think "medical marijuana" is effective in treating some conditions. Even if they have a treatment of their own, it's likely that medical marijuana would be able to undercut their ridiculous prices.
That aside, there are definitely cases where medical pot has proven effective where conventional medicine has failed:
Note that if you saw someone with epilepsy walk into a medical marijuana clinic, they would most likely look like a normal, healthy person.
Epilepsy can be notoriously difficult to treat. Prescription medication is a crap shoot. The neurologists throw drug after drug at the patient *hoping* that something will work. The drugs can have serious side effects however, so the treatment can be almost as bad as the disease. People with "generalized seizures"(which affect the entire brain) are not candidates for surgery either because you can't point to any particular spot for an operation.
Epilepsy sucks! If "medical marijuana" can restore the quality of life for people with severe seizures, I don't care how many people use the loophole to get their jollies.