Check out some youtube video on Emirates or Singapore airlines on their suite experience on the A380. You will see how great the food can be before you go take your shower and go to sleep in your full size bed.
I've been on Emirates A380. Best in-air experience there is. The food is good. But even in First Class you're getting, at best, reheated tray food, just transfered to fine china. It's not even close to eating at a great restaurant.
Not saying it's "quality" but you might never seen a decent gas station food.
In Lithuania I often prefer gas station sub over local restaurants. In NZ some stations cater decent pies. Either of two is better than "chicken or vegetarian" option on many flights.
The U.S. has fresh food at some gas stations as well. Wawa is probably the model. But, just like any sub shop, they make one sandwich at a time, not 200 all at once.