Dr. E. Paul Zehr of the University of Victoria in Canada has put together a book called Becoming Batman: The Possibility of a Superhero wherein he highlights what it would take for you to become Batman.
Zehr, a professor of kinesiology and neuroscience—as well as a martial arts expert—points to the work you'd have to do to improve your brain, vision, strength, speed, and reflexes. And then he goes into the equipment you'd need to have. While pulling all of this off would most likely be impossible, it might help to be a billionaire playboy with money to burn and very little demand on your time. Alas, I am no Bruce Wayne.
Maybe, in true Captain America-style, it will be the U.S. military's experiments that deliver us superheroes, or what I like to call Human 2.0.