Eru chose to make the
Ainur as
creatures that each imaged
him. That meant each individual creature was imbued with
free will, because without free will they’re just robots that don’t image Eru. That automatically implies that each creature can, and inevitably will, fall short of what Eru himself would chose. Sometimes those decisions are well-meaning but in error:
ergo gratis the decision of the
Valar to remove the
Elves from
Middle-earth and ensconce them in
Valinor, “for their own good (and safety)” of course. But sometimes its just damnable pride and selfishness, e.g.
Melkor Morgoth.
Long ago in college days (there were still mastodons roaming North America when I went to college), I played a great deal of Dungeons &
Dragons. I don’t want to push this analogy too far, but from time to time, players decided they would do particularly
evil things. I even had one guy play an assassin, and his character murdered another player’s character. Now, I threw this guy out of the game, because I think he spoiled it for everyone else; but that sense of looking at a subcreated world has never left me. Eru began Eä with the “big kids”, the Valar and
Maiar, and they get to play all the way until the end. Then the “little kids” come along, Elves and
Men, and they get to play part of the time. You have big kids picking on little kids, and some of them on each other. The nastiest ones picking on each other were thrown out (in
Tolkien’s world) by the other big kids, namely Morgoth,
Sauron, and the
Balrogs, probably along with some other lesser Umaiar (fallen Maiar).
Is that a correct view of reality, or subreality? I have no idea, but it makes sense to me: Some players get to play the whole game, from beginning to end, and some of those players who do get to play the whole game are just rotten to the core because they
choose to be. And they
can deliberately choose to be rotten – evil, we call it – because they are endowed with free will, a key ingredient for imaging Eru.
But at the End of
Arda (or Eä, as the case may be), it’s bad for Morgoth and his buddies. The game will be over, and it’ll be time to settle accounts.