Why does man wail when he arrives into the world, whimper

Why does man wail when he arrives into the world, whimper throughout his life and groan out, into the beyond, lamenting that his sojourn here was a waste of years? Man does so, because he is unaware of his glory, of his high destiny! He is the Divine poured into the human mould. It is the privilege of man alone, to be able to become aware of this precious truth! This is the message of the Upanisha...ds to man, echoed in scriptures, and in the declarations of countless saints. Yet, man turns a deaf ear to it, perhaps, due to his own misfortune created by his own misdeeds in past lives. What an inexhaustible source of bliss lies within you! You only have to develop the mind that will respond to the call, that will recognize the Truth.