My dad's family is all from the Milwaukee area, and the Braves played there until 1965 . When I would spend the night at my grandparents house (they moved to Peoria in the late 60's), I would hear stories of Hammerin Hank Aaron and his feats of strength. I grew up believing he was a God. Plus, the Braves used to have almost every game on TBS, and as a kid I used to watch every game.
I eventually started rooting for the Cubs just so I had a team I could discuss with friends. I converted to the Sox in 2004 during the fallout from the Bartman fiasco...I refuse to be associated with a fanbase who scapegoated a true fan when in actuality, every statistical model shows the error by Alex Gonzalez on the next play was a significantly more costly play.