I argued some of that here. If you know how to cook, it's not time consuming at all. As I said, my wife can make delicious devilled eggs seemingly appear out of thin air, and we eat on those for days.

She just whipped up a batch of raw hamburger meat loaded with onions and garlic. I can make a hamburger out of that as fast, or even faster, than waiting 10-15 in the McDonald's drive through. And again, once made I can eat on that all week long.