Originally Posted by tecoyah

Through the interaction of numerous chemical compounds, Electricity, and geological processes, a form of self replicating organics came into existance. Mutations created in the replication process, when combined with the relatively enormous timeframes involved, allowed for the eventual creation of a self aware form of life.
Due to the location of this Planet, with respect to its parent star, The elements of matter were capable of producing a biosphere. We, as Humans are here on this planet because.......we can be.

As to the philosophy behind your question, We are here to become more than we are. We have before us the ability to understand our existance, and become that which we percieve to be God. Human interaction, combined with Scientific Theory will inevitably result in an advanced understanding of what it means to be enlightened. With this enlightenment will come further advances in base understanding of our nature, and our place in the evolution of life in this Universe......insignificant as it is.