I agree that raising grains for fuel is not the best use for farmland. Food is.
I have done grant funded research into conversions of waste materials from the dairy industry into fuel and worked on developing burners for using green wood chips from tree waste and brush for heat production in Vermont.
Large scale agriculture of fuel crops on farm land is in fact energy intensive. Vast monoculture practices require fertilizers and pesticides on a large scale. The pesticides and herbicides produce immunities in the pests themselves and gradually become ineffective. Costs for these agents continue to rise as large scale chemical industries maximize profit.
There is a question in my mind whether the value of fuel produced, minus the subsidies really justifies all of the costs of converting food land to fuel land, in terms of financial, envionmental, and agricultural management and certainly in terms of world relations. I am a great fan of bio-fuels, but don't believe burning corn products or rapeseed oil is a proper long term approach to fuel problems.
I also don't want to take part in political debates. I don't think this is necessarily political in itself. I think it's just of practical interest, and don't really have much more to say about it. My work with building things and experimenting has always leaned toward self sufficiency and alternative energy production, that's a big interest for me.