Some benefits are:
Medicine (so many people need it)
Money (lord knows we need to pay China off)
Industry (anything you can build, fuel, edables,)
Less violence
Less people in jail
Less money to deal with that
Puts drug dealers out when you can just go to the store
Less likely to try stronger drugs because they won't be offered to you by those drug dealers
Less likely to be robbed on the street

I myself need it medically as well(PTSD, anxiety, depression) apron it being legal people can start taking care of themselves by growing their own organic fresh marijuana. Less money will be needed and the people of America can slowly gain financial stability. Please government people stop thinking about lining your silk pockets and thinking of the betterment of the world/ Kentucky.