It hasn't been so since before you were born. Your experiences in your mother's womb have shaped your brain. All that your DNA contains is the basic rules on how to assemble a generic human brain. What happens to it has far greater consequence on what you become.

I like to joke I was born an engineer. While it's true I have always been curious towards all things technological (I was born during the height of the Apollo program and, as a kid, wanted to be an astronaut) but parental support (getting lego-like kits with transmissions, gears, motors, good books and a good school) landed me on one of the most prestigious engineering schools in Brazil where I was further "perfected" by some good teachers (and some awful ones - you have to learn to avoid them, after all).