That's an easy one:
There Is A New Star Shining In The Sky Tonight...
There is an old belief that the stars shining in the night sky are the spirits of those who have died. They have shed their earthly bodies and exchanged them for bodies made of light; thousands upon thousands of our dear departed friends all promoted to glory in the night sky. There is another saying that the brightest flame burns the shortest. My friend, you were the brightest star in my own universe. While I burn on, my flame dimmed by grief and despair at your passing, the stars are watching me. They are too far away for me to touch, just as you have gone somewhere I cannot follow until my own star-time comes. They cannot be held close for comfort, just as I can no longer hold you close, though I held you close to comfort you in your final hours. We were together for such a short time, but the stars will burn forever. One day I will grow tired of this earthbound body, my own star-time will come and my spirit will soar into the sky to burn with all those friends who have gone before me. On the inky cloth of space we will be reunited in constellations of joy. Until then, my flame burns low and dim and cold without you. Through my tears I look upwards to see if you are watching me and what do I see? There is a new star shining in the sky tonight.
To keep you wondering and dreaming.
To make us humble.
The stars are like our own Sun, but more distant. Their purpose then is to provide warmth and light for the planets which (presumably) orbit them.
The stars in the sky have no purpose other then that which you perceive.
There is no purpose to anything that is not human, or divine-made. And one can't ask the question, "Why did God make the stars?" any better than you can ask "Why did you make your feet?" The stars, planets, lifeforms, cells, atoms, and everything in between are all parts of him. They all come together in the grand scheme of things to create one thing: consciousness/God/love.
Consciousness/God/love is the only ob