Why "why"?

Dichotomous minds of humans have separated everything in this universe into two categories. Consciousness is what seperates living beings from inanimate objects. However, when we try to trace back the origin of the universe, we are stuck a singularity (big-bang theory) or nothing (more fashionable super-string theory). So the obvious question which comes to my mind is : at what point in time did the dichotomy emerge? and more importantly : why? In fact, the origin of "why" and for that matter all the "wh" questions date back to the origin of consciousness. And now we have come full circle to ask a question like : Why "why"? An interesting thing to note is : we probably know the answer to the questions like : How "why"?, When "why?", and Where "why"? But then we are not asking these questions at the same level of consciousness. These questions can be easily answered by the story of evolution or alien-breeding or whatever. But my first question Why "why"? still remains unanswered.