I base it on the few scenes we see with "Bruce Wayne". He is a totally disturbed guy with some serious social phobias, it seems.
Bruce is, was, and will probably continue to be a disturbed guy. Childhood trauma is the cause.
As for social phobias, he wasn't the Phantom of the Opera you're trying to make him out to be. Note the party wherein he calmly interacts with others. He's not sweating, scratching the back of his neck, or stammering.
He only valued his privacy.