Michael Bérubé sums it up pretty well:
And surely some of you must regard victory itself as a prize of dubious worth. Until tonight, your team was legendary, and their legend shaped and defined your self-identification as fans. If you win the World Series, you win the World Series– and you become kin to the 2002 Angels and the 1980 Phillies. You will be elated (and drunk!) for a couple of days, sure. But then the championship will begin to sink in, and while some of you will say, as did a New York Rangers fan in 1994, “now I can die in peace,” others among you will be plunged into existential crisis.
This was written before last night’s game.