But the real issue I have is diet monotony. We live in an era of convenience and have forgotten about how fruits and vegetables yield their harvest in seasons. When most fruits/vegetables are in season, you might eat volumes of them, then never eat any for the rest of the year. Some indeed can be kept for a few weeks/months.
The same is true with meats: larger animals would be consumed on a less frequent basis than smaller ones.
Disclaimer2: I'm not a nutritionist, I just enjoy traditional foods.