This is like a skin cell asking what is the meaning of life. The meaning of life is larger than our individual selves, and is found in the totality of life: we are either the recursive self creation of God, or the creation of some super intelligence seeking answers to questions it can not. Either way, our purpose is clear: create heaven, create time travel, teleport all living entities at the moment of their death to heaven, and then provide comfort, care, and understanding. Yeah, not my idea: read "The Light of Other Days", Arthur C Clark's last novel.