Did [Elves] just stop having kids? The 2nd and 3rd
Ages saw long stretches of peace yet the
Noldor and
Sindar seem to have had their numbers stagnate or decrease.
It rather sounds as if
Elves had only one generation per age of
Arda. The
Valar fought and imprisoned
Melkor to protect the Elves that
Oromë discovered awakened in
Cuiviénen. Melkor was imprisoned for three ages.
Finwë was from Cuiviénen, and there seems to have been at least one generation of Elves before Finwë and Elwë (
Elu Thingol), because I recall that
Círdan is described as being related to
Thingol. The Elves that agreed to go to
Aman apparently hiked to
Beleriand and from there were transported to Aman: that was apparently the
first age of Melkor’s imprisonment.
Fëanor was born in Eldamar: that’s a
second age of Melkor’s imprisonment, and Fëanor seems to have been one of the older children of his generation. (I have no citation for that: it’s my impression, not something I can prove.) Fëanor married and had children, and that’s
the third age of Melkor’s imprisonment. After that, Melkor is released, cozens the Noldor, kills the Two
Trees, raids Formenos, kills Finwë, steals the Silmarilli, and hies off for
Angband. I think this period from
Morgoth’s release and the First Age meld together into yet another age, because another generation of Elves (and Half-elves) are born:
Gil-galad,
Finduilas,
Eärendil, Elwing,
Elrond,
Celebrían.
In the Third Age, Elrond and Celebrían have three children that live into the
Fourth Age. So it isn’t that the Elves stopped having children, it’s just that they reproduced slowly in comparison with
Dwarves, whose Third Age generations were about 100 years and who lived on average to about 250 years, and especially with
Men. (Dúnedain (
Númenóreans) are said to have lived on average three times longer than normal Men, 210 years at first, and their
kings to about 400 years for the first 14 generations, so their population also grew more slowly than ours.)
In addition, large numbers of Elves emigrated from Middle-earth to Aman at the end of the First Age and in the Second and Third Ages, with increases in departures after the middle of Second Age with the War of the Elves and
Sauron, and then again after the
War of the Last Alliance at the end of the Second Age and the beginning of the Third Age.
Gildor mentions it to
Frodo: “We are Exiles, and most of our kindred have long ago departed and we too are now only tarrying here a while, ere we return over the Great Sea.” So between slow population growth,
deaths in battle, and emigration, it would appear that almost all the Eldar (and perhaps some Elves not originally counted among the Eldar) had left Middle-earth by the time of the
War of the Ring. Certainly none of the four major centers of remaining Elven power
Tolkien mentions –
Lindon,
Rivendell,
Lórien, or the Forest kingdom – could any longer project significant military power, though no doubt they remained tough defensively, as both
Thranduil’s kingdom and Lórien proved during the War of the Ring.
[C]an someone explain the
Ringwraiths to me in terms of power? They're clearly lesser than
Balrogs,
Dragons, and Sauron, yet they're treated as terrifying
weapons in Sauron's hands.
In
Letter 210 (complaining about the film proposal of Morton Grady Zimmerman, who was not, apparently a professional film writer), Tolkien wrote of the
Nazgûl,
Their peril [i.e., the Ringwraiths’] is almost entirely due to the unreasoning
fear which they inspire (like ghosts). They have no great physical power against the fearless; but what they have, and the fear that they inspire, is enormously increased in
darkness. The
Witch-king, their leader, is more powerful in all ways than the others…
The Witch-king was also able to break Frodo’s barrow-blade by uttering a spell while attempting to cross the Ford of Bruinen to attack him, and I think the Nazgûl in
Bree had an effect upon
the Ring that made it try to expose itself, as was revealed (or concealed) when Frodo fell from the table in
The Prancing Pony. Later, the Witch-king spoke “in some forgotten tongue words of power and terror to rend both heart and stone” (“
Siege of Gondor”) so that
…the Gate of
Gondor broke. As if stricken by some blasting spell it burst asunder: there was a flash of searing lightning, and the doors tumbled in riven fragments to the ground.
Gandalf described the Witch-king as a great “sorcerer,” and if he was, as seems certain, in life a great
Númenórean lord, then he was also in life a great warrior and leader of Men as well. The same might be true of
Khamûl the Black
Easterling before his
Ring of Power consumed him.
I think it's also fair to say that things in the 3rd and 4th Age are simply more mundane in their advancement. We don't see the creation, for instance, of anything like the
Elessar or
palantíri. While
Andúril is reforged, we don't see the creation of any other legendary blades (like
Anglachel, Anguirel,
Glamdring,
Orcrist, or even
Sting). Even fancy new
buildings seem to be the province of, at the latest, the first third of the 3rd Age. Beyond that we simply seen improvements or smaller scale building.
Tolkien describes the Third Age as a period of decay. The civilizations of the Elves, the Dwarves, and of the Dúnedain all decay during this period. Part of this, I believe, was the influence of the Three
Rings of Power of the Elves. These were made to “preserv[e] the memory of the beauty of old, maintain[] enchanted enclaves of peace where Time seems to stand still and decay is restrained, a semblance of the bliss of the True West.” (From the long
Letter 131 to Milton Waldman.) And in
Letter 154, he wrote,
[T]he Elves are
not wholly good or in the right. [W]ith or without [Sauron’s] assistance they were “embalmers”. They wanted to have their cake and eat it: to live in the mortal historical Middle-earth because they had become fond of it (and perhaps because they there had the advantages of a superior caste), and so
tried to stop its change and history, stop its growth, keep it as a pleasaunce, even largely a desert, where they could be “artists” – and they were overburdened with sadness and nostalgic regret. In their way the Men of Gondor were similar: a withering people whose only “hallows” were their tombs.
The remaining Dúnedain of
Arnor might therefore have been different in this respect: They were beaten so low they were trying merely to survive and sustain some semblance of civilization at all, with the assistance of their Elven allies.
Sauron's forces increased in native power (
Olog-Hai &
Uruk-Hai). But even these breedings seem less...supernatural than the original creation of the
Orcs and
Trolls.
As for the Olog-hai (
Black Speech, I suspect, for “great
troll”), I have a strong suspicion Sauron developed them from
Entwives. Notice the description of
Treebeard when
Merry and
Pippin first meet him in
Two Towers (“Treebeard”):
It belonged to a large Man-like, almost Troll-like, figure, at least fourteen foot high, very sturdy, with a tall head, and hardly any neck. Whether it was clad in stuff like green and grey bark, or whether that was its hide, was difficult to say.
Later Merry and Pippin described their attack upon
Isengard (“Flotsam and Jetsam”):
A punch from an Ent-fist crumples up iron like thin tin.
Now compare those to the description of the Olog-hai in
Return of the King:
[T]here came … a great company of hill-trolls out of
Gorgoroth.
Taller and broader than Men they were, and
they were clad only in close-fitting mesh of horny scales, or maybe that was their hideous hide; …
[T]hey … beat upon helm and head … as smiths hewing … hot … iron.
Nothing definitive, but suggestive, I think, of some relationship between the descriptions of
Ents and “hill-trolls”, if these “hill-trolls” are, as I suspect, Olog-hai.