Agree with you on ethanol, but..
The impact on the quality of life in the US from the food for fuel mandate needs to be factored into why the corn for ethanol mandate has been a gross failure of our leadership. Bush started this mess and Obama who had the opportunity to kill it, but failed too because the people making money off it are on his list of finacial supporters that got him in office.
By funneling nearly 40% of the US corn crop into this black hole we have seen food prices on corn connected food products, bread, beef, chicken, etc.. go up between 30 and 50% in the last 3 years.
The loss of corn as an animal feed stock has had a ripple effect on the price of other feed stock commodities feeding the broader rise in food prices. For example dairy, rye, and soy based products.