monsanto owns your food

why is it a problem that we grow only 4 kinds of potatoes in the united states? why is gene modification a problem?

we eat corn, a lot, it's in almost everything we eat (high fructose corn syrup). most of that corn was planted using seeds from monsanto, who has genetically modified the corn so that if a worm eats any of it, the worm dies. do you think that's a good thing for us to be consuming? that's only the tip of the iceberg as far as the problem with having seeds that are patented.