Life - Why life?  There is no scientific reason for the existence of life.  The universe doesn't care if there is life in it - it does not benefit from it.  Yet life, and especially more advanced life with consciousness like us humans, came about.  A 'driving force' in the universe behind it that made it all happen would make sense.  Many would call such a driving force, God.

I dont know if its important to believe in God or not but then there is some supernatral power that protects all of us from evil. Thank god that we are not from the "Other Side" so we have no fear of returning to it, hence no fear of death as we could make the assumption that we would likely have some instinct built into us that we don't need to worry about our mortality since we are immortal.  However, for the large part, this fear of death exists in most people to varying degrees.