What were these people thinking?
We baseball fans like to complain. It's the nature of the endeavor. Being a fan is about 99% disappointing. The other 1% makes it all worthwhile, but in between the peaks, there are many valleys.
Part of it is just how unlikely it is that your team is going to win the World Series. Even fan bases who are relatively spoiled -- like those who root for the Dodgers -- will likely end any given season unhappy. The Dodgers are a dynasty of a sort, to be sure, but they've still only won two World Series since Ronald Reagan left the White House.