My partner and bought a CSA share, and the entire food planning for each week is based on that CSA share. Often times, food is prepared on the weekend, and we eat only left overs all week. We also have a small garden outside. Between the two, we have little need to buy anything but proteins, all of which are vegan, and perhaps a few additional food items like bread.

Our food waste and costs have dropped dramatically, but we did have to make a 'sacrifice' of choice. Each week, the food that is produced for consumption in the house is decided not by us, but by what is produced and distributed by the farm. Due to this process, we might have lost choice, but we have gained, surprisingly, variety.

To expand on this idea: I think that the prevalence of choice in our supermarkets (example: fresh fruit in the middle of winter, wtf?) is massively inefficient, and should be reconsidered. Of course, when human society decides to get its collective act together and fight climate change, the point is moot. The entire 'choice regime' is dependent on high density fuels, and energy density will make these choices for us if/when carbon based fuels are made more expensive.