My fellow Christians: Why are you so against the use of marijuana?

I am against smoking it, but i think Cannabis is useful for things like hemp, which is a great natural fiber. And no, I'm a vegan. I dont touch any of that sheeiitt :] Foodwise, its taboo, but i dont think its absolutely horrid if other parts of the plant are used? I think using other parts of the cannabis plant is fine, but not so much the actual bud, but thats just my opinion. i dont think it should be used to get high...I stay clear of that stuff because I dont need it to feel good and to be happy :) It lowers your ability to cope with stress when not high on it, and it does have quite a few bad side effects.