If 100 years wasn't bad enough,
Since the Chicago Cubs last played in the World Series, these expansion franchises appeared in the Fall Classic:
New York Mets - 1969, 1973, 1986, 2000
Houston Colt .45s (Astros) - 2005
San Diego Padres - 1984, 1998
Colorado Rockies - 2007
Florida Marlins - 1997, 2003
Arizona Diamondbacks - 2001
Seattle Pilots (Milwaukee Brewers) - 1982
Minnesota Twins (franchise broke from Senators) - 1987, 1991
Los Angeles Angels - 2002
Toronto Blue Jays - 1992, 1993
Tampa Bay Rays - 2008 (1 Game Away)
Montreal Expos (Washington Nationals) - Never
Washington Senators (Texas Rangers) - Never
Seattle Mariners - Never
So hold out hope in the fact that the Rangers, Nationals, and Mariners won't be going anytime soon.
Teams who have won the World Series since the Cubs last won:
Boston Red Sox
New York Giants
New York Yankees
St. Louis Cardinals
Los Angeles Dodgers
New York Mets
Kansas City Royals
Toronto Blue Jays
Chicago White Sox
Take solace in knowing that the St. Louis Browns, Montreal Expos, Kansas City Athletics, Seattle Pilots, Houston Colt .45s namesakes don't exist anymore so they can't best you.
Pray that the Giants don't win one in San Fransisco, the Seattle Mariners, San Diego Padres, Houston Astros, Milwaukee Brewers, Texas Rangers, and Washington Nationals don't reach that mountain top.
And root as hard as you can against the 2008 Tampa Bay Rays.
39 teams have existed in 1 form or another since the Cubs last won a World Series.
All but 14 of those teams have done what the Cubs have not.
It's not even really fair anymore. No fan deserves that much suffering.