re: How do some people go their whole lives watching football and not learning the rules?

Agreed 100%.

But I hate it when they ask questions I can't answer that well.
For example she asks,

"What does he mean when he says the RB likes to run behind his pads or likes to run downhill?"

Or in baseball, which she likes more, "What is a backdoor breaking ball?
Or "What is an in and out swing or what's a seeing eye single?"

Stuff you can't explain but have to see to understand.

For some people it’s the nostalgia. The feeling. They love the energy that comes with it. It’s tradition. Not necessarily X’s and O’s