Weed is totally harmless when you smoke it.it is not addictive at all and it is way less harmless to your body than cigarette itself. it effects your body and mind less than alcohol.You never lose yr control with weed,you just feel stoned.(it is really irritating to be around stoned people when you are not,they all become lazy asholes,to be exact.
The thing is,as it has no serious effects in short terms ,and really fun;weed is a drug;and it makes a step to all those other serious drugs. cos even if it doesnt make addiction; sooner or later you'll get used to it's effects,need more to get stoned,and finally it will not be enogh,and eventually create a step to all those other and really dangerous drugs!!
one other thing is that every time you smoke weed,you kill your braincells.i have friends that have been smoking for years and they cant concentrate,they cant remember some details of their memories...it is bad.
So i'm sure you want to try it like hell.So go try it.Really,and dont be afraid to use it every once in a while.but make sure that once in a whiles are really far from each other.
By the way it doesnt make you smarter or more creative,it makes you stupid,enough to make you think anything you do is smart or creative.