I think that cannabis is one of the best alternatives in medicine. Even if we compare most painkillers ( pills, not opioids) and cannabis, I believe that cannabis is better because it's natural. And it's already proven that medical marijuana in the right amount has a positive impact on health and helps a lot of people with chronic diseases and pain. On this site,
http://california-wellness.org are many articles about cannabis, its' medical usage, benefits, etc. I often read articles there, and as for me, it's a great source of information.
the world has no problem In Marijuana ,This has been proven a medicinal Leaf ,But the real issue here is the Abuse and that is Why Government is making a restrict rules against this, because once this is Approved for sure Syndicates and bad elements will Take hands and the Problem will arise .
maybe better if the Government itself will Plant and Market this, so the supplies will be limited and Outside business will be easily tracked.