As another corn grower (not in enormous amounts and not sold to others though) I actually am opposed to High Fructose Corn syrup being so "abused." I also think Beet Sugar isn't the best either, both sharing the reason that both are genetically modified in commercial varieties, but for Corn "sugar," the other reason is just how far we've gone to get it. We're talking process after process of adding acids, heating to extremes to separate what we want/don't want, and eventually going to such extremes that it is like getting sugar from Wheat.
Agave, Cane Sugar, Sorghum Syrup, and Honey are already mostly if not purely "sugar," if not purely, then most of the process is just heating and filtering out the excess. Now of course, yes, most of them are so processed we've gotten rid of all the important nutrients, but still, they're far more "natural" than the two most common sources of plant based sweetener.
This is of course just my opinion. I'm pretty picky about corn in general though. What I grow has to be tested negative for genetic modification, none of it is super-sweet, and very few of the varieties I grow are even solid yellow or white.
I'll just finish and say, I don't hate the existence of High Fructose Corn Syrup. I just don't like where we've gone with it.