We have too few things that Americans enjoy together. The Super Bowl is a too-rare occasion that unites us.
On other days, we are overwhelmed by divisions.

Conservatives oppose liberals; even moderates get accused of not having enough principles.
Racial divisions have gotten worse.
Income inequality is a hot topic.

But when football fans take sides between the Seahawks and the Patriots, it's not a blood rivalry. The smack talk is in the spirit of competition, based on love of the game.
Other nations go wild over soccer, which is great. But when our country focuses on the Super Bowl, for once it unites us all and makes us feel very American.
We simply don't get enough of that.