Sports and Art are essentially the same thing: a phenomenon. Everyone is exposed to either at some point in their lives, but usually the interaction is minimal at most. And this experience is displaced at least once: (in the case of art) it is a photograph or otherwise a reproduction of a work of art and (in the case of sports) it is a visual and sound recording of the actual event, usually delayed a few seconds thanks to a wardrobe malfunction a few years back.
But, when you actually are THERE: in the sports arena, in the art museum or gallery, you are interacting, experiencing, smelling, tasting, feeling, seeing--this last part is especially so because you as the viewer are deciding what to see when you are there. It is not a two-dimensional thing in front of you since you can walk behind it, around it, and view it from 1000 different angles than the one the camera can give you.
I think that is why I love attending museums and football/baseball/hockey/soccer/basketball games. You are left to your own devices in deciding what to pay attention to. You can pay attention to the audience, the show, the architecture around you, or anything else you so choose. I suppose you could also say the same thing about music and attending a concert.
Experience is the most wonderful thing in the world and I pity the person who has never attended a living, breathing thing such as a museum, concert, or sporting event. It is so...alive. Bustling with activity and just fantastic. I have no better words to describe it. In the words of Bob Marley, "This is my message to you.." and it is to LIVE.
Case in point: D and I drove across the country and stopped in Kansas City to watch a baseball game. No idea who they were playing, and the game wasn't terribly interesting, but look how beautiful the stadium is, with the fountains and the light-up crown. And we shared an ice cream sundae in a KC mini baseball cap. What a great way to break up a 24-hour drive!