Would you believe a guy born in 1969 whose favorite team is the Brookly Dodgers, who moved after 1957? That's me.
I love the timelessness of it. It's so relaxing, unlike other sports. It's a social event, as one said, but that's becasue you can talk between at bats and stuff.
And the history...I coudl spend hours combing www.baseball-reference.com and thinking about considering the what-ifs of different trades and the results over the next years, or other things. Indeed, I have - as dtf955baseballfan I've posted several timelines about it on www.alternatehistory.com. And, i even wrote a whole book about it, "If Baseball Intergrated Early,' about what happens if the game is integrated fromt he beginning, at http://www.lulu.com/spotlight/Baseballifsandmore
But, even without the history, and the complexity that can come from it, it would still be a lot of fun. As noted above, each game has that element of timelessness, as well - they could play forever. And, you'd recognize the game pretty well even if you went back 100 years - or 150 for that matter.