When I used to live with my parents, there were always fresh food stands around town. Local farmers would always have fresh fruit and vegetables from their season yields resulting in our family eating fresh vegetables on the regular. Now days those stands are no where to be found. Most farms in that area have shut down due to lack of help and or finance. Plus how could local farmers compete with stores such as Walmart that sell the same things plus some for half the price. The fresh food was the norm at the time considering it was readily available and easy to get to. Now one could say, Walmart is the social norm for daily foods because it is so wide-spread and easy to get to.
Although super-stores like Walmart have been putting small businesses and farmers out of business, they are making large farms prosper. These stores sell more items at a time creating a higher demand for foods resulting in farmers mass producing crops in the shortest amount of time possible to maximize profit. This therefore results in more resources used to run production such as fuel, water and food for livestock, fertilizer, pesticides, labor. More fuel use results in an increase of pollution and a continuation of depleting fossil fuels. Fuel alone, if completely depleted will result in severe consequences to the food chain. Livestock will not have food to sustain them resulting in humans having the same issue, lack of food. I think the social norm should be what it is today with super-stores making life easier for everyone but, with more efficient ways of going about production meaning less pollution and use of renewable resources instead of one-time-use.