The question "why are we here?" is a philosophical question which has no reference. Attempts have been made by theologians to answer this. Our answer is that we are here as a by-product of evolution. The scientific response is not a question of "why are we here," it is "what are the processes that generate different life forms." We also go into this in the book The Best That Money Can’t Buy, by Jacque Fresco, above on page 19 in the chapter "From Superstition To Science."