When I think of the plains of North America, that used to support herds of hundreds of thousand bison/buffalo, that are now turned over to corn and soy that can only be grown there with massive human/energy intervention, I am sickened. And on a smaller scale, I am very intrigued by the cycling of cattle and crops on land that has shown increased yield for both. But since it is more usable for small farms, and not agribusiness, good luck getting it in widespread use.
And, Nycteris, I think you have your terms mixed up. Looking at our elderly, I am certain that it is an ugly, long-drawn out death from grains. True starvation is supposed to actually be a relatively painless, almost euphoric way to go, due to the substances your body produces as it is breaking itself down. (Not that I want anyone to go out that way. Just saying.)