It's hard to explain, but let me put it like this: Your existence is the sum total of experiences and events that occured leading up to this point in history. Keeping this in mind you could say that all of existence was to serve the purpose of creating you. Which is kinda true, but anywayz I believe that all of existence is working towards a common goal set upon us by the Creator. We don't know what the goal is but everything is an integral part in achieving it.
D*MN!!! ALRIGHT, YOU ASKED FOR IT!!!! *slowly pulls Almighty Katana of TRUTH out of sheath on his back, and brings to bear* IF I HAVE TO KILL EVERYONE ONE OF YA TO KILL YOU, I WILL, AND BELIEVE ME, YOU DON'T WANNA SEE ME KILL YOU...*starts moving from clone to clone, slicing their heads off, moving closer and closer to the REAL dave123*