In this world, food is not enjoyed, or even thought about. A perfectly balanced combination of nutrients is devised personally for each individual based on their body chemistry, and taken as one might take a vitamin. No one prepares food, or eats together, or eats anything at all other than this daily requirement.
In this world, people would be much healthier, but would they enjoy life as much? Maybe they would find enjoyment in other things. Perhaps, instead of breathing air by rote they would get flavored or scented air, and breath from special bags with different brands, and styles.
Would such a world charge for air instead of food–both necessities for life?