The problem is replacing over 300 unique varieties of corn, and over 40,000 unique varieties of rice with 3 or 4 patented, flavourless, often less nutritious varieties.
Stop pretending all opponents of GMO food are scientifically illiterate new-age types. I owe my life to GMO (cancer immune therapy)... hell, I am GMO. But there is nothing inherently good about progress. Nuclear technology can be used to provide clean, cheap energy to entire cities... or it can be used to eradicate an entire town in a matter of seconds and bring decades of unimaginable human suffering.
Using GMO to help third world countries grow foods they otherwise couldn't? Great. But that's not the full story, is it.
Where is the great progress in getting the same bland, flavourless, overly-sweet two or three varieties of rice, corn, and potatoes in every friggen store? Is driving Indian farmers to suicide and suing small farmers who accidentally grow your crop because the wind blew progress? Is destroying thousands of years of man-driven biodiversity progress?
Coming from a country where real vegetables are sold, it's depressing. Everything tastes the same in North America. Every salad, every sauce. Same shit.
People don't oppose Monsanto because they hate science, they oppose monsanto because it's the Enola Gay of GMO.