Cannabis is illegal mostly beacause of it's positive effects. Just think, If more people were using the world would much more peaceful. This is not good world business simply because it would hurt money. More high people=less wars & better understanding of one another=less profits for the international bankers. It's so much more profitable being illegal because they can fund government operations to eradicate crops & this in turn produces more revenue for the banks because of that wonderful thing our money has attached to it called INTEREST!