The argument for permitting marijuana consumption was that it’s beneficial for certain things, such as:
Relief from nausea and increase of appetite;
Reduction of intarlobular (“within the eye”) pressure;
Reduction of muscle spasms;
Relief from chronic pain.
(Source: http://www.wamm.org/medicinalbenefits.htm)
If that’s the case, why haven’t the pharmaceutical companies analyzed marijuana to determine the actual chemicals that provide these benefits? After all, no one chews willow leaves to get the salicin. Instead we consume acetylsalicylic acid, or aspirin.