sdandrea1 I'm the same way, although the amount of passion I have for each team has differed over the years.
-Grew up in Utah, became a fan of the Broncos.
-Went to medical school in New Orleans right when they were finally starting to compete, became a fan of the Saints.
-Did residency in Tacoma, became a fan of the Seahawks, although they were pretty bad in those days (1988-1991).
-Moved to central California, became a fan of the Niners when they were cruising with Steve Young at QB.
-Ended up in Virginia, became a fan of Washington.
Currently, my allegiances are as follows:
Washington, first and foremost.
Saints second.
Seahawks third.
Niners fourth.
Broncos fifth.
Over the past decade I have sometimes pulled for the Browns and the Jets, just because I like to see losing franchises do well.
Hated teams? Dallas first, Atlanta second. I also tend to not like Pittsburgh, for no good reason. Maybe it's the annoying towels?