Am I alone in this? I don't know anyone who goes to an airport to eat at a nice sit-down restaurant. Not to mention the fact that everything seems to be more expensive at an airport. At least that's been my experience.
I frequent two places when I go to an airport: Starbucks and Dunkin Donuts. If I'm hungry I'll likely find a burger or something at a fast food place. I'm just not interested in getting to an airport early enough to go to fancy-schmansy restaurant. If my flight is delayed I'd much rather belly-up to a regular bar to spend my hard earned money.
Save money by bringing your own food
Believe it or not the TSA doesn't care if you bring food through security, as long as you follow a few simple rules. Their chief concern is liquids. So you can stuff that fanny pack of yours to the brim with snack bars and stroll through that check point without a second thought (except for maybe your fashion choices).
They're TSA safe and cheaper than the alcohol you'd buy at the airport! That's a win-win in my book. However, before you go drinking them on the plane, do your homework on what you can and can't do after you pass through security with your little friends.
I just don't think of an airport as a place to eat a $35 filet mignon. Yes, there are some very nice restaurants at airports. But are they worth eating at? I guess that's ultimately up to you.