It's kind of funny how philosophy is the only topic that gets this kind of analysis. What is the purpose of music? Perhaps most famously (after philosophy): what is the purpose of astronomy?
“Tiger got to hunt, bird got to fly;
Man got to sit and wonder 'why, why, why?'
Tiger got to sleep, bird got to land;
Man got to tell himself he understand.”Of course philosophy wants to argue it's purpose. Musicians could write a symphony to explain music, if they felt the need, and astronomers could draw a detailed map of astronomy and explain how fast the different sub fields were diverging based on their red shift and parallax calculations?