What will we care for the why and the wherefore?

... a rhetorical question. It has a question mark at the end, but you are not meant to answer it because the person who is asking it already knows the answer.

Not all of Derrida's writing is to everyone's taste. He had an irritating habit of overusing the rhetorical question, which lends itself easily to parody: 'What is it, to speak? How can I even speak of this? Who is this "I" who speaks of speaking?

Why do they call it rush hour if no one moves?

If practice makes perfect, and no one's perfect, then why practice?

My two fingers on a typewriter have never connected with my brain. My hand on a pen does. A fountain pen, of course. Ball-point pens are only good for filling out forms on a plane.