I want to argue that the conceit of Batman having a secret identity no longer works.
It once did, back in the 1930s and ’40s, when Batman was essentially a badass moonlighting in tights, socking hoodlums and thugs in their jaws. At that time, the extent of the audience’s suspension of disbelief was that the fellow wouldn’t get shot.
How simple, compared to today. The Batman of 2012 is a one-man paramilitary force capable of investing hundreds of millions of dollars into being the Caped Crusader—a one-man Blackwater USA! Frank Miller was right: there’s no way that the U.S. government would permit this guy to exist: