Last autumn's drama might have given Boston a pennant, but it took away the defining characteristic that made it a team worth following elsewhere. Now, the Red Sox are just another team. There is no more reason to root for them than there is to root for the Orioles.
Actually, they're worse than just being another team. The Red Sox are the new Yankees.
Both the Red Sox and Yankees are recent world champions. They both have bought those titles with payrolls far exceeding every other team in baseball. They both have rosters stocked with players from other organizations (the Red Sox even more than the Yankees). They both have fans who think the world revolves around their team. Cripes, David Wells pitches for Boston now. It's almost to the point that if it weren't for the pinstripes and Johnny Damon's hair, you wouldn't be able to tell them apart.
Who cares whether either the Red Sox or the Yankees win the AL East anymore? It's like choosing whether you want Halliburton or Bechtel to get the latest war contract.