What really gets me are the people who complain about being able to fly across an entire continent within five hours in near perfect safety for a few hundred dollars.

I remember being trapped next to a loud woman on one flight where she proceeded to complain about every minor insult (slow drink service, so so food, etc). When we got to the Sierra Nevada, I pointed out the Donner Pass to her, and suggested she look it up. "It'll give you some perspective on your trip".