There is one big reason, I oppose G.M.O. Food: They are "patented life". Big corporations take life forms and make them patent-able and this way they make that that once belonged to all their "intellectual property".

And don't forget one thing: GMO might help to stop hunger in some regions, but in the current state of it, it does not. Many farmers in poor regions where lured into the GMO trap, just to find out one or two years later, that the proposed additional productivity of the crops did not make up for the additional costs of the fact that they had to buy the crops (and in case of Roundup, the glyphosate) from big corporations, which before they could take from their own harvest.