Great article. And it's good to see that the general attitude to this very beneficent plant is changing. To think that only about 25 years ago, marijuana was still mistakenly seen as an evil and dangerous drug is almost incomprehensible.
Apart from the medicinal benefits you outline in your post, it's also one of the safest in terms of recreational use. Drunk drivers kill, stoned drivers drive very slowly and safely. Drunks get in fights. Stoned people sit still, and, for the most part, don't even argue.
Another important and relevant point ... Alcoholics, as well as cocaine, speed and heroin addicts, always need more and more. On the other hand, users of marijuana experience what is called "reverse tolerance," which simply means that they need less to get high -- or to achieve the desired effect. So it's not only safe, but increased use makes it a bit safer.
Hardly the dangerous drug society was told it was just a few years ago