I agree that hemp is the better choice but at this time (in retail), things made out of hemp are more expensive. I expect that part of the reason is that hemp is not currently produced in the quantities that cotton is which means both the raw materials and the means to refine them are more scarce and hard to acquire. Unless there is a big reason to switch and until the cost is more equivalent to cotton people are less likely to demand those products. I don't know how to affect either of these problems.