I didn't watch much baseball between around 1984-1992. I had been a Brewers fan (sorry) for the two years I lived in Racine (one year they went to the WS and lost to Cardinals). Robin Yount was my favorite player as a 7 year old.
When I moved to State College, my fandom was pretty much 100% Penn State football. It wasn't until 1992 when I moved to Chicago for college that I got back into baseball.
Part of it was having a friend who did baseball simulations on his computer, which lead to a lot of fun fantasy drafts, etc., and part of it was all the day baseball. The Cubs were bad, and on any given afternoon we could just walk to Wrigley and buy $10 tickets right before the game started. If we were bored, we'd just go watch a game. That obviously all changed with the Sosa/McGwire home run chase, and it's never been the same since.
So I got to see Sandberg (and Grace, and Dunston, etc.) play on some terrible teams in the mid-90's. I can't say I was as big a fan as those of you who grew up with him (Sosa was my first real "favorite"), but I'm happy to have seen him live several times.