I have a policy of sticking it out to the bitter end. My family gets a little irked at times, but my older family were the ones that taught me this, so I blame them. I still have incredible strategies for getting out of the parking lots and town for both football and basketball games. Am I some of the first people to leave the Ames city limits after games, more than likely. Do I have to walk a bit to get to my car, yes. Will I do this when I get to be 80, not sure. I am young enough that a bit of walking is OK but who knows what will happen when I'm older and care that night is coming or I can't walk 1/2 mile to my car.
I sure hope when I'm older that people cut me some slack and appreciate that I had been buying tickets and coming to games long enough to have earned the right to do whatever I want with my tickets including, leaving a little early or not using them (while trying to give them to someone else to fill the seats. I too feel that completely unused seats are a waste when we are more or less sold out.)
Let's cut those folks some slack, they probably have their reasons for doing what they do and are probably contributing as much (or maybe much, much more) as any of us to the financial support of the athletic department.