Honestly it's unneeded and just a drug that causes people to waste there life. Everyone that smokes it always thinks that it clears there minds and helps them focus and see things more clearly. In reality it doesn't, I have a few friends that do it/use to do it quite often. They sound like complete idiots when they're high and don't make sense half the time. Marijuana is a pretty useless drug, I honestly don't even think it's needed for medical use. Maybe with cancer, but that's about it, sleeping and stress no way. A easy cure that works for 99% of people that can't sleep is exercise. A gym member ship is a lot cheaper than buying drugs every week. Same with stress, when you work out you release endorphins and makes you feel all happy, and it's natural. If Marijuana was legalized so many more kids would do worse in school, definitely a lot more drop outs. I feel like if it was legalized Americas average IQ would drop quite a few points.
People can't honestly think that it doesn't kill or alter brain cells. I've tried it a few times, and the way it makes you feel can't have any adverse effect. Every kind of medicine always has a down side to it. Even simple things like aspirin or Tylenol.