Cavediver and Modulous and Bluegenes appear to be arguing from the vantage point that all "why" questions can eventually be explained by science.
I'll join bluegenes in an objection to being listed in this group (I'm sure cavediver will likewise object).
My position is that science can and does answer 'why' questions.
My position is that science is very good at doing it.
My position is that science is the best way of answering many 'why' questions.
There are plenty of 'why' questions that science cannot answer, for example:
Why is Mozart better than Beethoven?
Why do birds suddenly appear, every time, you are near?
*Why do purposeful green ideas sleep furiously?
Why does god threaten to torture married people who find people other than their spouse attractive?
Why is it good to help a person who has been beaten and robbed?
Why is evidence a useful tool in determining truth?
Why does the imminent universal creative spirit cause things to be?
Why did god create man?
Why did god make the sky blue?
Why is there something rather than nothing?
**
The easiest way to think of one for yourself is to ask a why question that assumes something that is not a scientific issue. Aesthetics, ethics, metaphysics, theology etc.
* unless it is actually true that birds suddenly appear when you are near, then the answer is likely to not only be because the birds want to be close to the person in question - which seems true by definition (unless the answer is that the person is suffering from confirmation bias or something, I guess) - but also science can in principle find out why birds want to be close to the person.
** Science may give an answer to this (though I am highly skeptical of this), but I have a feeling that whatever answer may be found, someone can easily just ask of it '...but why?', for infinity
Edited by Modulous, : No reason given.