I am primarily a dressmaker and a knitter. In knitting yarns, I absolutley HATE bamboo. It's slippery and slick and has wimpy drape, and once knitted keeps on growing and growing and growing. I can't imagine ever switching from cotton fabrics to bamboo, soy, corn, or the like.
Like BellaBoo, I don't buy the "green" technology hype we are having shoved down our throats left and right. There are always "Progressives", hungry to reinvent the wheel, who usually end up having to admit to failure.
If it ain't broke, don't "fix" it... Maybe the shortage of cotton for China will revitalize some cotton farming in America. I heard a startling figure on the radio the other day, that 60% of all U.S. farms today only gross $10,000 or less annually. That is just pitiful.