I would hasten to say this. I totally support a lot of the legalization for medicinal purposes but there's still way too much of this happening:
Driving while high on marijuana causing spike in fatal accidents - http://www.today.com/health/driving-while-high-marijuana-cau...
Police: Driver Was High Before Crash That Killed Massachusetts State Trooper - http://www.necn.com/news/new-england/DA-Massachusetts-State-...
Driver was high on marijuana when he killed NE Portland cyclist, police say - http://www.oregonlive.com/portland/index.ssf/2015/12/driver_...
Driver accused of crashing into marijuana dispensary while high on marijuana - http://www.oregonlive.com/happy-valley/index.ssf/2016/06/dri...
Teen driver admits to smoking marijuana before crash killing 3 - http://www.kiro7.com/news/teen-driver-admits-smoking-marijua...
Sorry but that old adage that people who smoke weed just sit on the couch and eat potato chips and people who smoke don't hurt anybody is a load of BS. These are not simple accidents, these are people getting high, driving and killing people, and its happening a LOT more frequently.
I do believe in legalization for medical purposes and feel there are huge benefits for people who need it - but clearly there are still issues that need to be worked out. And save your "Drunk drivers kill more people very year" and "Alcohol is way worse. . " arguments. Just because we already have one dangerous legal drug, does not make it right to legalize another one. Heroin and Cocaine are also schedule I and II drugs. Are they any less dangerous than weed?