This is like the unseen paper for english lit exam. You get the poem, read it for the first time and then have to write a couple of A4's about the meaning, why the use of certain imagery etc. I always hated that!
But you get raw emotion with music.
i suppose it's completely subjective. We all have to understand the world we are in and relate aspects of life back to ourselves.
Plus the kudos factor too, the idea of , "yeah i can totally relate" or "yeah i hear you", when they don't because they may feel stupid when everyone else knows, or pretends to know the meaning...