"Organic" food is an emotional construct. It has nothing to do with nutrition or even science, it's just a fluffy belief that somehow, things were better when most humans share-cropped with the insects and died young, when 25 was elderly.
Why not give up modern medicine? Or electronics? Heck, why not give up every human development including domestication of animals and agriculture--how much more natural can you get?
Of course, only a few million of us could live this way, and those that could would be so busy surviving that they would not have any time to reflect upon the nobility of their existence.
Actually, this is a misuse of the word "natural". In reality, Hoover Dam is every bit as "natural" as a beaver dam -- the former was not created or maintained by mystical powers, and human rational thought is no less valid than beaver instincts.