I think most people equate the farther a team gets in the playoffs, the more successful the season. There is also more national media exposure from advancing. Yes, all but one team loses in the end. But with 30 teams in MLB, if all things were equal, a fan can only expect their team to win the WS once every 30 years. Given that all things aren't equal, fans of teams that can't spend $180-200M a year can reasonably expect a WS victory less often than that. If a WS victory is the only success, fans are setting themselves up for a lot of disappointment. Despite losing the WS, the 1982 post-season was a very exciting time in Milwaukee. It would have been a lot less exciting had the Brewers not come back to beat the Angels.