So a group of DEA agents popped popcorn, watched "Reefer Madness", then decided that they needed to have as many people to bust as possible. Highly predictable.
No, weed won't cure anything, but neither will any prescription medicine outside of antibiotics. It has to do with a person's quality of life. Anyone taking pain relief prescribed medicine can tell you just how fast a body builds up a tolerance to those pills. Not to mention, many become dingy and slow thinking due to the side effects.
If we let big pharma control the prescribed marijuana and benefit from the profits thereof, it would be legal in all 50 states tomorrow.