What is the main purpose of life?

This earthly world is a place of spiritual training for the soul and spiritual development is the purpose and meaning of human life. God (Buddha) created the Great Cosmos with the objectives of "progress" and "harmony," and these are the guidelines for the evolution of the human soul. God (Buddha) has created the system of reincarnation between this world and the Spirit World (Real World) so that we can cultivate infinite experience and walk ever closer to God (Buddha).