Went to tons of Phillies games as a kid, my grandparents company had box seats behind 3rd base that we got to use for 1/4 of the games minimum, this was like 88-94 i'd say so I got to watch Curt Schilling come up, Lenny Dykstra, John Kruk, Darren Daulton, Mickey Morandini, Pete Incaviglia, Mitch "Wild Thing" Williams and probably a bunch of other great names that I can't remember anymore. It was a great time, but we also only lived 10 minutes from the park, and I had yet to really fall in love with other sports prior to the '94 strike.
If Nashville got a team, i'd probably try to get to one game a year just to give my kids the big league experience, but i'd have a tough time following the team on a daily basis. I like the NFL better, and it's a lot easier to be a "hardcore" football fan as it can more easily fit into family life and my Preds obsession. For me to really be into a Nashville MLB team, i'd have to be single, live next to the stadium and be able to get in for less than $15.
Otherwise i'd only end up really watching the MLB team when they got to the LCS or even WS.