Here's an interesting point about the DH ... What other differences do the two leagues have in their rules?
I don’t know if there are any differences left (save the DH). AL umpires used to wear enormous chest protectors that more or less forced them to be square behind the catcher. The NL umpires wore thinner chest protectors under their jackets and tended to crouch on one side or the other of the catcher.
The weak-hitting pitcher affects the strategy of the NL game. You have a pitcher who has been effective come up at a crucial part of the game. Do you keep him in or pull him for a pinch hitter? I’ll confess, I’m a life-long NL fan. The AL with its DH and the change it brings to the basic strategy of the game just doesn’t appeal to me.
Perhaps it’s a case of just getting older. The way things used to be done are often seen as better. I’m old enough to remember college football games where players played both offense and defense and quarter backs pretty much called their own game. It’s why I find I enjoy watching rugby on TV more than football.