I love it when they lose because they try to buy one every year! Makes my day when they take em on the chin.
I personally root for the Marlins and Astros. Used to travel to Houston as a child for games and also lived there. Have been a Marlins fan since Jay Powell brought me and my family down the Marlins locker room, after a game, the year they won their first World Series. He is a family friend and he was always available and friendly any time we went to any game. He also brought me into the Astros clubhouse during his stint there, which strengthened my Astros following (before I lived there).
I always pull for the underdog, lower payroll teams in MLB.