Edgar Allan Poe was a very melancholy man, which brought forth his creativity of many of his poems and stories. He had a very troublesome past which involved the many of his loved ones to die at the grip of illness.
With no one to call his family and no one to love him, how could anyone expect him to write an uplifting poem? From the moment of his birth, he knew that he wasn't welcomed in the world.
Many of his poems and stories come from his personal experience, reflecting his inner emotional turmoil. Lost and abandoned, he writes like a child, calling so desperately for someone to relieve him of this loneliness.
Within many of his stories involve madmen who lost something, just like he had. Their grip on reality, their beloved, he had been through that so often, that he knew not of a happy ending. Death and insanity were the only way in which he lived, in which he knew how his own story would eventually end.