I only read a little of this thread, but my thoughts are that the Brewers have a very bright future, so I'm looking forward to that.
And while I am obviously disappointed with the Game 3 loss, it's not because I now think "we're never going to win a World Series in my lifetime." I didn't think we were going to do it this year, even after such a great regular season. I did not think we'd beat the Phillies in the NLDS and I did not think that if we did, we'd beat the Dodgers or Padres.
So I wasn't upset that our chances at a WS title were gone. I was sad that we didn't get to enjoy the thrill of a series victory and doubly sad that it was snatched away at the last second. And I was sad that we didn't get to enjoy the excitement and hope during the next series, even if it ended in a loss.
A lot of times, the thing I hate the most about my teams losing in the playoffs is that the fun is over. It's not that they didn't win a championship, it's that now I don't get to enjoy the games until the next time around.