Lounge access isn't particularly high on my list of priorities, but I like certain amenities, like Wi-Fi (the public wi-fi at some airports sucks or is even non-existent), printers, showers (not at United Clubs
), and available seats/power (in theory, at least). The agents can be handy during IRROPs, too. I could live without the food, and I only occasionally drink the bad-to-mediocre booze.