You can get drunk on overpriced cocktails on an airplane. You can pay $20 for slow, crappy WiFi. You can even shell out $4 to watch a movie you probably didn't catch in theaters for a reason.
But getting a decent amount of leg room in economy is next to impossible (depending on which airline you fly), and being guaranteed an overhead spot for your carry-on luggage? Keep dreaming.
And if you're flying United, if an in-flight agent has got a problem with the clothes you're wearing, you might have a strict dress code to follow.