How odd that such a huge portion of the US worships a ton of bulked up dudes tossing a brown ball back and forth. My favorite oddities:
1. One that smacked me in the face from Paul Graham's essay was that when a CEO makes 100x the normal pay...it is an outrage. But those same people complaining are okay with all of these athletes making 128x pay.
2. They're just throwing a ball back and forth. "Oh but they're generating economic surplus!" Napoleon Bonaparte once thought that by having people dig holes in the ground he was doing the same. . . think about how better the world would be if the people in the NFL industry (athletes + overhead) spent their talents in another field??
Bastiat's "What is Not Seen" beckons this: http://www.econlib.org/library/Bastiat/basEss1.html
3. All of the fans say 'We won!' No asshole, "They won." Good for them, they worked hard (at game..) and did well. You, on the other hand, sat on your ass and drank a lot of beer.
4. Some cities base the majority of their culture around these ridiculous customs. Take Louisville Kentucky (and Lexington Kentucky) for example........ IT is a RELIGION here. Speaking out against these teams is borderline heresy.
5. Die hard fans quote game/player stats like their number-crunching statisticians. Amongst the groups where sports is religion, these "statisticians" are revered.
Sports fans have welcomed me, and been very accommodating explaining parts of the game I don't understand.
And then there are other geeks like you - that have an almost visceral reaction to the idea that people would enjoy something like that. I don't understand people who have such a negative view of others' happiness.
Oh I'm sure you have some kind of horror locker-room story where the football team did something disgusting to you, but sports wasn't what did it. Those alpha males would have some something similar even without the context of sports.
Getting together with friends for a pick-up game is not difficult and much more gratifying and you can still drink beer afterwords.