3 years ago I said I'll never fly Midwest airlines again (nevermind why), and I still haven't, even though they've been cheaper than their competitors many times from MSN or MKE. But, I would probably fly them if they had an obvious fare mistake. My goal is to not allow them to make money off of me again, so it's okay if they're going to lose money because of my business (assuming I actually want to go to a place where the price mistake applies).

So, maybe I would change "I'll never fly --- again" to "I'll never fly --- again, unless they make a price mistake and it's to a place I want to go."