There is a good case to be made that this one remaining true "why"-question, which does not reduce to merely some one-level-lower description, is actually ill-formed and doesn't make sense.

Am Douglas Adams on this one. 42 is the answer, we don't know the question. Seriously, though I've gotten to a stage where I don't wonder much about the one 'why' axiom anymore*. Thanks for the clarification though.

*-- Used to wonder some 10 years ago though.