I think you touched upon exactly the point, when people try to find meaning in the external trappings of this world, they are left empty, wanting more. However, I believe that my life purpose is ME and your life purpose is YOU. The constant unfoldment of our self understanding and self acceptance. Because as you stated, isn’t it a miracle that we even exist? Aren’t we supposed to enjoy this thing we call life, with wild abandon? Spot on.