Because the "organic farming" future is deeply  horrifying and exceedingly unlikely both?
 Read back up a few posts - the context for this was the (probably correct) assertion that one of the main reasons china is focused on maintaining a strong industrial export sector is that they have to import vast amounts of food to feed the immense population Mao left china with, and they need to produce goods to have something to trade for that food. In that context, the collapse of industrialized agriculture in the west would have the direct consequence of hundreds of millions of people starving to death. I am simply saying that this is extremely unlikely to actually happen. Partially because mindboggeringly huge resources will be mobilized to prevent it at the least sign of it actually happening.