I think Chris likes the idea of not eating foods that are pumped with insectides and antibiotics.
I should also add that a lot of farms are fertilized or watered with natural elements that often contain these things, which can be absorbed by the produce anyway.
As to whether this is any better or worse than having the chemicals directly applied, I am uncertain.
Keep a mind for a healthy lifestyle and the most important element, which I feel, is to read.
~Sphinx