I am against genetic manipulation primarily because of the power it gives those who do the manipulating. I understand why a company would want to protect the resources it dumped into this kind of tampering by barring those who buy the product voluntarily from saving seeds and getting more product "free", but when Monsanto's ilk prosecutes farmers whose crops were involuntarily contaminated by tampered genes, and bars them from saving their own seeds -- the essential practice of agriculture -- that is an outrage. I am against GMO food in general because it discourages seed-saving, which destroys self reliance. I also distrust the amount of energy and care that has to be invested in it: the system hardly seems resilient, and the 21st century will not be kind to systems that cannot adapt.
"John Henry said to his captain, 'A man ain't nothin' but a man - -but before I'd let your steam drill beat me down, I'd die with a hammer in my hand." - Woody Guthrie