Let’s just put aside the issue of Batman being trained by ninjas in the films, or the question of whether in the comics Batman operates with sort-of-superpowers when interacting in stories alongside Superman and other such characters. By “become Batman,” I mean the basic concept of Batman that we can all agree on — a master of martial arts, of forensic and detective skills, of gymnastics, of science and chemistry, of history and geography, of the workings of organized crime, of criminal psychology and physiology, and a man with a suit offering protection against bullets and knives and electrocution but which allows him to move as fast as an Olympian runner and acrobat.
Becoming Batman isn’t merely taking Karate classes and reading “Chemistry For Dummies.” Anyone could exercise, study martial arts, and put on a mask. That’s not Batman — that’s not even Robin. Batman is on another level entirely, and I apologize for having to break your hearts, but none of us will reach that level to become Batman.
The genius of Batman is that it pretends to be realistic; it lets us convince ourselves that with enough money and training, we could become Batman, too. It’s a fantasy, but it’s a fantasy that is more compelling and convincing and thus more fun.