The quickest way to a championship in sports these days seems to require a team to take a few steps back. This decade, the Boston Red Sox, Chicago Cubs, Houston Astros, and others went into tank mode at some point then won a World Series. The New York Mets began the 2010s looking to rebuild the organization only to exit the decade with just two postseason appearances.
Overall, the 2010s were far from succesful. While they did make it to the World Series, the lack of a championship and continued winning will leave many feeling sour about the last ten seasons.