Human stories are practically always about one thing, really, aren't they? Death. The inevitability of death. . . . . . (quoting an obituary) 'There is no such thing as a natural death. Nothing that ever happens to man is natural, since his presence calls the whole world into question. All men must die, but for every man his death is an accident, and even if he knows it he would sense to it an unjustifiable violation.' Well, you may agree with the words or not, but those are the key spring of The Lord Of The Rings

But Sauron was not of mortal flesh, and though he was robbed now of that shape in which had wrought so great an evil, so that he could never again appear fair to the eyes of Men, yet his spirit arose out of the deep and passed as a shadow and a black wind over the sea, and came back to Middle-earth and to Mordor that was his home. There he took up again his great Ring in Barad-dur, and dwelt there, dark and silent, until he wrought himself a new guise, an image of malice and hatred made visible; and the Eye of Sauron the Terrible few could endure.

I invented that little rhyme about 'One Ring to rule them all', I remember, in the bath one day.

The greatest adventure is what lies ahead

People remember Longfellow wrote Hiawatha, quite forget he was a Professor of Modern Languages!

There cannot be any 'story' without a fall - all stories are ultimately about the fall - at least not for human minds as we know them and have them.

Then she fell on her knees, saying: 'I beg thee!' 'Nay, lady,' he said, and taking her by the hand he raised her. The he kissed her hand, and sprang into the saddle, and rode away, and did not look back; and only those who knew him well and were near to him saw the pain that he bore.