The thing about being a sports fan is that ultimately, your team will lose and it will be heartbreaking and a big downer. Even if they have a good season, they're probably not going to win the championship, because only one team can win the championship and probability dictates that it won't be your team. So you'll end the season depressed.
Sometimes your team will win (hopefully). And every once in a while your team will win in a big way, in an important game. In a historic game.
And if you're extra lucky you'll be there to see it all go down.
Undoubtedly your non-sports fan spouse will even find it invigorating and scream and yell and laugh and cheer and comment at your foresight to get $5 tickets before the game sold out.
That's the best thing about being a sports fan.