Unfortunately, bigjets is right on. First and foremost, passengers want the lowest price, and will put up with almost any discomfort to get it. Mind you they won't do it silently or quietly, but they will do it. I can't tell you how many people I know who have sworn they will never fly Spirit again. Some of them have sworn that 2 or 3 times already.
Just goes to show you once again that Herb Kelleher had it right. He made it clear that he was selling you transportation from Point A to Point B, and if it wasn't too bumpy you got a glass of Coke and a bag of peanuts. The rest of us insisted on selling the
experience of air travel. Now when they fly on us they still want that
experience of air travel, but they want it at a Spirit/Southwest/etc price.