What a wonderful thing life is.  Why question existence or attempt to give it purpose; simply enjoy it and pursue your innate drives.  Achieve satisfaction by being the best you can be while doing the things that please you or help you capture your dreams.  Spend time in the company of other beings whose lives you may enrich and who, in turn, provide pleasure and enrichment for you.  Learn.  Live.  Above all, recognize that you simply "are" a finite part of the infinite "is" and give all life forms due respect; they are living just as you are.