When it comes to food, there is a trade off between the cost of things and the amount of time needed to prepare those things. Cooking things from scratch is almost always cheaper in terms of money and most expensive in terms of time. If you are strapped for time, you're going to probably be more willing/need to pay more for food that doesn't require as much preparation. Even if you arent ordering uber eats every 5 minutes, there are a lot of other ways that people pay for more time. eg. canned beans instead of dry, tv dinners instead of literally anything else etc.