I'm definitely more a fan of baseball memorabillia than the game itself.
For me, it's probably a function of how much extra action and speed of play other sports display......I probably would have been more of a baseball fan in the 1950's and 60's when the game stood up better as a spectacle when compared to the other sports one could follow.
Though I know there has been some evolution over time of baseball player abilities - mainly strength related, I would guess the game of baseball resembles it's own early inception more than would the other big name sports. I dare say coaching and strategy have similarly played a bigger role in the variability of what you might witness in football, soccer, hockey, basketball etc., thus providing a more pleasing array of outcomes to please the eye. There's just more spice and sizzle for limited time outlay.
Still, baseball memorabillia kills all other sporting memorabillia, being such a quintessential historical game and series of sporting stories.
I love being a collector
!