I think it should have been changed, yes, but it wont deter people from smking it.
My dp smokes it everyday. He has since he was 13 - hes 28. He used to smoke it like fags, all day. That was before I got with him. Now its one joint a night, when all the kids are in bed, and he smokes it outside it the garage.
I hate it.
Its unsociable
It makes him stink
It is the only reason his friends see each other
And Im pretty sure its a contributing factor to his forgetfulness and "lack of common sense" if you know what I mean.
It upsets me that he smokes it, he loves it, and will never stop. I tried to make him stop once and he just went to his friends every night to smoke it instead.
Tbh, I cant actually say that Id always come before the weed, when his friends come round at all hours, and he just buggers off outside with them, and it upsets me to think like that.
Im not sure that it causes schizophrenia (sp?) but Im fairly sure it affects the brain in other ways, forgetfulness, etc.
Its a horrible drug, that unfortunately (I think) get used too much without people knowing what it is capable of, and enough research being put into it.