Also, there's only about 11 minutes of action per game:
I enjoy watching games, but only with it pre-recorded. It takes about 30 minutes per game (I watch penalty determination, reviews, and injuries alongside the brief actual game play).
Or, and I really like this, I let the game play at real time and pick up a bit between plays and clean during commercials. I can get 2 hours of stuff done during one game, and some exercise (running in from the kitchen to catch the start of the next play). Add some beer and maybe fire up the grill (pausing the game to build up fast-forward time - charcoal man here...) and it can be a rather pleasant way to spend a lazy Sunday afternoon.