"Why" is not important

A typical question that many of us face in an interview is "why ?". "Why do you want to do this ?" , "Why did you choose this profession ?", "Why do you like this subject ?", "Why do you want to be (x) ? " ; etc.

The answers are not always very easy to find.

But look at it this way: think of some of man's greatest feats: the ascent of Everest, man's journey to the moon, Michaelangelo's sculpture, Shakespeare's tragedies.. can any of these people answer why they did it ? I doubt it.

Such questions don't make much sense. One must answer them accordingly.