Most people are stuck in the late 90s and early 2000s when it comes to Ben Affleck the actor.
They see Gigli, Daredevil, Paycheck, Pearl Harbor, Reindeer Games, Forces of Nature, and Armageddon. They see "Bennifer."
What they are forgetting about are two little films called The Town and Argo. They remember Ben the writer and director, but not the actor, who was the centerpiece of both of the films as lead actor.
He is fully capable of handling Batman. It was announced that he will be involved in the development of the character from a writing perspective as well, perhaps even directing a stand alone Batman feature as well (that part is speculation, directing-wise).
He has showcased excellent range in various roles (Changing Lanes and great moments in some of the above films). And honestly, it's Batman. All he needs to do is to be able to pull off an edge ... and he's FULLY capable of doing that.
I'm excited that it is him. He has charisma. I can see him in that cave. I can see him with the Batsuit on, the mask off, staring down with an intense gaze while watching footage of Superman on a screen. I can see him raging out. I can see him easily as Bruce Wayne as well.
He is perhaps the best thing to happen to the WB/DC universe to come.More questions on Batman (comics, movie and creative franchise):