Is There a Comparative Advantage in Food Production?

There is about eight point nine tons of carbon dioxide per household per year from food consumption in the united states. A bigger farm, whether it's a sheep farm or a produce farm, is going to be more efficient in its production a per pound of food than a smaller, local farm. All agricultural transportation up and down the food chain delivers only about one ton of carbon dioxide annually. Why is there more hatred for food and the complexity of the production transportation of food than there is for, let's say, an eyepad?