Yeah, fair point.
I will say for someone looking to start right now at F9, NK, or SW, I think SW would be better. Keep in mind SW holds a record... 45+ years flying and 0 pilot furloughs. Not after 9/11, not after the 2008-2010 recession. Stability is worth it's weight in gold and SW definitely seems to have done something right. I know we can't predict aviation, but still based on past performance I see SW around long term. Sometimes you just cant put a price on stability.