That’s a bit unfair. They also catered to broke people who weren’t crazy or argumentative. On a planeload of 100 people, there must have been 60 of them at least who were just broke. Or on some routes, Spirit was the only carrier with a direct flight so they were just normal people who wanted to get to a certain place efficiently (Hi, that’s me, I flew them for this reason). Keep in mind Spirit had an excellent safety record, too, so airline choice in this case was primarily a question of having luxuries or not.