What if you truly were
only human and not a spirit-being in human form?  What if Spirit did not guide you?  Why, then you would all be like your robots
your see in your science fiction movies: 
mechanistic beings devoid of emotion. 
You would go about your business interacting and carrying out your
functions.  When one robot ceased
functioning due to an irreparable malfunction, you would place it in the
recycle bin and be done with it.  End of
story.

But instead, you
love.  Because of this, you have
elaborate ceremonies when the body no longer functions and yes, you
grieve.  You feel loss because you
love.  You grieve because you are not a
robot; you have a heart.  You have a
human heart that pumps blood through the body in robotic, mechanistic function,
but you have an emotional heart, for you are spirit, and love is your very
essence.
Spirit is recycled, for
life is eternal.  Love is
never-ending.  Grief and loss turn into
rebirth and rejoicing.  Rejoice that you
feel your emotions.  Appreciate all of them.  Were it not for the joy and the pain, there
would be no life.