Really really late post. This should of been response #2.

Pot is illegal for the same reasons High Fructose Corn Syrup is in everything we eat, and drink, and that being government subsidiaries.

Corn producers get it, sugar cane producers dont. Thus its cheaper to sweeten everything with a reprocessed product like HFCS.

Pot will compete with lumber, especially in the production of paper.

One Acre of hemp can processed into as much paper as 3 acres of trees, and it does not take up to 5 growing seasons for it to be harvested. It takes only 1 growing season to harvest hemp.

So think about it, if hemp is illegal for commercial consumerism purposes, why would it pot be legal for recreational purposes?