While refrigerated transport came with great benefits - everyday families who previously had meat only 1 or 2 nights a week could have it daily! - but I don't think we've yet realized the impact of only consuming food that has been dead and stored for several days.
when you have an "unlimited" access to food, you have to have self imposed scarcity to eat the diet that our bodies are designed to intake. It doesn't help that there is weaponized fat, salt, and corn in colorful bags everywhere you look.