For me:
I'm an Atlanta Braves fan. We got cable TV when we lived in CT in 1983. They were a decent team that year, and had Dale Murphy. After that, they went through that long losing period in the late 80s. From 1991 to 2005, during the Maddux-Glavine-Smoltz-Chipper years, they were a joy to watch. Who wouldn't want to be a Braves fan then? I wasn't one of the fans who jumped on the bandwagon when they got good. I suffered with them in the 80s.
It was also different, being a Braves fan, when I lived in NY, and PA.