A future of genetically engineered food

Rauch impressed me with his theories on the benefits of genetically engineered food and he presented some compelling examples to back up this theory. The problem is, no matter how many benifits this method offers, I can't help but fear the consequences that loom over us if we do adopt this genetical engineering. Rauch, in his listing of consequences, does not mention the threats they could pose to human health. He discusses them as possible environmental nuisances and the possible introduction of superweeds or other invasive types in the wild. He fails to discuss the antibiotic resistance they may carry, or their ability to break down our defense mechanisms, or anything like that. Isn't it humans that we are ultimately looking out for?
He admits that genitical engineering is a band aid and not a magic bullet. This portion confuses me because it could make people really sick, and mess with our internal structure to such a degree that we would never be the same. I can't see how he can push for something that would not be a long term solution at the risk of human health.
I also feel the need to ask something about this method. If our problems originated from a straying from the natural way of doing things (hunter gatherer), aka the starting of agriculture, then doesnt it ring a little bell that it might be a bad idea to stray even further from the natural way, by completely controlling the growth and production of food? What if this takes us so far from the "natural way" that there is no recovery or returning to a way that worked for so long?
I like the idea of the Precautionary Principle, i guess. If its going to happen, then at least "prove" that its benign. I even would take the "no-till without biotech" approach even though Roach appeared to dismiss it as too expensive. If we can find money for genetical engineering, then we can find it for that, rite?
Near the end he uses the Chesapeake Bay watershed success story to come at environmentalists for putting off the use of genetical engineering out of fear, and basically says "all that good would be undone if we did it your way". To this I must ask him if he is so sure that every case would be successful. ok thats lovely, it worked, but that doesnt ensure anything for the future of genetic engineering.