The rules aren't important. What's important is, it's linear. Every time I throw this ball, a hundred different things can happen in a game. He might swing and miss, he might hit it. The point is, you never know. You try to anticipate, set a strategy for all the possibilities as best you can, but in the end it comes down to throwing one pitch after another and seeing what happens. With each new consequence, the game begins to take shape.
As they say "In baseball, anything can happen, but often doesn't". Oh boy, is that true.
Also, baseball is the most random of the major sports in the US. Consider the playoffs, statistically, any team getting into the playoffs has an equal chance of winning the World Series. It's just that dynamic.
The other interesting consideration about baseball is that when the ball is out of control, is when the scoring happens. This is in contrast to most every other sport where control of the ball is necessary to score.
If the ball is there bouncing around in the outfield, and runners are on base, guess what's happening.
It's also why single players do not dominate that game. The random nature, and all they can do is get the ball in play. After that, good luck predicting it.
I love the game. I love the anticipation of the pitch, how the infield basically freezes and gets ready. My heart skips whenever the ball is hit well. Single? Double? Home run? GRAND SLAM!? Oh, nope, foul.