The purpose of life is our own. We create the point to our own existence. We forge bonds with people, and help them in order to feel that we are further bettering the lives of ourselves, them, and the rest of the world. To speak from my belief in the 7 chakras/chi (no I'm not a Buddhist or Hinduist, I kind of go my own way, I'm not religious, just philosophical) the purpose of my life is to find the balancing point in my chi, so that I may transcend the perceptions erroneously laid down upon my mind by so many who came before me, and see the truth of things: That we are all the Chi, and we are in fact one great sentience with many facets seeking only to maintain the balance of order, good, truth, and speculation.