I donโt really care that much one way or the other, but I think Ben Affleck is actually pretty perfect to play Batman if you think about the role.
Seem somewhat innocuous and uncomfortable when not in the suit, but who can still be charming at need? Affleck has that.
Be intimidating and gruff when in the suit? Affleck can do that.
Batman is not a difficult role. Who really gives a crap who plays him.
What wouldโve been really fun is if theyโd cast a woman in the role.