I would argue most of what you are referring to as "food" is not and should not be considered food for humans though.
I simply stated that in order to have a discussion, a full sentence should be used. The commenter asking "Poverty? Marketing?" added absolutely nothing to the conversation and I asked him/her to clarify.
The other times that you say I've "crossed into incivility" have already been addressed by your previous warning to me from a few months ago, which I have since made it a point to not engage in what you referred to at the time as flamewars with regards to my topics. My comments often generate healthy debates and conversation.
According to Wikipedia (if anyone cares..): "A food desert is an area, especially one with low-income residents, that has limited access to affordable and nutritious food. In contrast, an area with supermarkets or vegetable shops is a food oasis. The designation considers the type and quality of food available to the population, in addition to the number, nature, and size of food stores that are accessible. Food deserts are characterized by a lack of supermarkets which decreases residents' access to fruits, vegetables and other whole foods."