A very esoteric question to be sure…perhaps one could try to imagine non existence, and … sensing the futility of this concept, then we must of needs be certain to accept the notion of life everlasting… for after You and I are gone there will be others to fill the void, if not human, then some other, but be certain that the universe will fill the void….and again we ask why…well then why not…LIFE.  for if there were not life, then no other form of existence would be relevant…a quote from an unknown source might answer it best… you decide…

GOD says “You have been given your existence that I might experience life through your eyes”

This question has been asked again and again since Man was able to verbalize his thoughts…

Our finite minds will not allow us at this early stage in our evolution to comprehend the meaning of existence, or how it came to be…someday perhaps as we evolve beyond our petty reality of possession, and self, perhaps when we come to terms with the notion that we are not  the center of reality, but merely a part of the whole, when we accept we are one with all the exists, and the nature of the infinite, perhaps, when we learn to listen with our entire being to the universe then  and only then we will begin understand the reason for life.