Have you seen The Island?  An intriguing movie that I saw for the first time a few days ago, The Island is a tale of the necessity of humanness.  In it, a corporation produces clones for wealthy individuals who, as their organs break down, can harvest new ones from the clones and consequently add more years to their lives.  However, along the way the corporation begins to produce clones that, unbeknownst to them, come to generate memories and emotions of their own, memories and emotions that their "originals" do not share.  In the end, these clones break out of their bondage, find themselves, that is, their implicit humanness, and build new lives.
     The implications of this scenario are many, and I will suggest just one.  We have come to embrace pathos as intrinsic and essential to being viable and fulfilled human beings.  To be human is to wrestle with doubt and meaning, emotion and longing, and the very idea of existence.  Much as we may want to, we cannot ignore these things; much as we may want to dismiss the need for meaning, and much as we may wish to look past the turmoil of our emotions, we know that, deep down, we cannot live without them.  We know that we must embrace the full angst of being human if we are to be one.
     That's why to live as if on one hand the puzzle of existence does not matter but to on the other hand give vent to our passion and imagination is wholly inconsistent with who we are.  We cannot have the fullness of existential meaning if we, consciously or otherwise, overlook any of its parts.  So, yes, appreciate the joy, but enjoy the mystery, the puzzle, the angst of wondering about the fact of existence, too, for in doing so you are affirming a fundamental part of the universe:  if meaning of who you are does not matter, nothing else does either.