They prescribe it medically to treat cancer and many other things, such as arthritis pain. I used to smoke it really heavily in high school.
During that period, I was so much happier and more easy going than I had ever been. My acne went away completely, I enjoyed life a lot more...
I'm really glad that the world is starting to open up to it more and see it's potential, and that it isn't harmful.
If it wasn't for the fact that I really need a job, I'd probably still be smoking it.