Nick,
The cards, and the history they represent in general, are awesome. I love the Old Judges, the T206s, the '33 Goudeys and whatnot. I'm a big HOF collector. But IMO there is nothing like getting a new card of a guy who couldn't play here because of race issues and who you maybe didn't know much about until you got it and looked into what he did. That's pretty special.
The history of baseball is always fun, and the history of the other leagues is really interesting IMO. If you enjoy your time here 1/4 as much as I have enjoyed mine you will be really rewarded. There are great people on this forum and lots of knowledge. Soak it up and be happy to be the sponge.
Best,
Kenny