Hedge funds and other speculators are drving up the price of coffee (as they have done with gasoline) much more than warranted by fundamentals of supply and demand. The government should prohibit futures markets and let the gamblers play at the casino where they can't harm the rest of us.
Futures markets are a means by which coffee processors can lock in the price of future deliveries, but this benefit is not worth its cost. Lots of businesses live with uncertainty--sometimes the acutal price in the future is more than the expected price and sometimes less. A prudent company can survive these fluctuations and thrive on the averages.