[Belegorn Calenmir]

At the end of the First Age, after the Great Battle in which Morgoth was overthrown and thrust through the Doors of Night into the Void, the Valar, under the instruction of Illuvatar, proposed to the children of Earendil and Elwing choices: Whether to belong to the Race of the Eldar (Elves) or the Race of the Edain (Men).

Elrond chose to become like an Elf, being granted the Eldarin lifespan and a greater capacity for learning and power than a mortal man. He was hugely instrumental in the Second and Third Ages (first as a herald and advisor to Gil-Galad and then as a benefactor of the ravaged Dunadan remnant).

Elros became a Man, possibly the first Dunadan ever, and was granted a lifespan easily five times that of "normal" men. He was given the Isle of Numenor, upon which he, with the last of the Houses of the Edain, formed the Kingdom of Numenor.

Elrond's children were given the choice of which Race to belong to as well. Arwen, who fell in love with a mortal, though long-lived, Dunadan (Aragorn), chose mortality, as well as her brothers, Elrohir and Elladan, who fought alongside the Dunadan Rangers and were practically Rangers themselves.

But what about Elros' children?

Why is there no mention of whether or not Vardamir, son of Elros, was given the choice? Does that not seem a little unfair or harsh to them? Why were Elrond's children given the choice?

There are a few arguments that I have thought of, but they are very non-conclusive:

1. Elros probably married a woman from the Edain, so his children were most likely too human to be granted Eldarin life.
-PROBLEM: Elrond married a full-blooded Elf, the daughter of Celeborn and Galadriel. Thus, it would seem, Elrond's children would be too Elvish to be able to choose the Gift of Men (mortality).

2. Elros' children were born and raised in Numenor, a human realm, without Elves, so they would not be so interested in becoming an Elf; Elrond's children were deeply involved with the Dunadan and therefore grew attachments to that Race enough to decide to become mortal with them.
-PROBLEM: If this was true, then Elrond's children, who had been alive for thousands of years, would have likely chosen to become mortal long before the end of the Third Age, thus dying before LOTR's time. And Arwen had been living with her grandmother much of the time, only meeting Aragorn once before considering giving up her Elvish inheritance.
-PROBLEM 2: Until the time of Ar-Adunakhor, the Numenoreans frequently hosted Elves and were considered Elf-Friends. The Numenoreans were deeply entrenched in Elvish culture, practically saturated with it. Lack of Elvish influence does not work for this argument.


3. Idril and Luthien were Elves and could choose mortality, so of course Elrond's children could. In fact, practically any Elf could choose mortality and become human.
-PROBLEM: WRONG! Only Luthien became mortal, and she did not become human. She died after Beren did after he was mauled by a werewolf, of a broken heart as Elves could do. Mandos, under the permission of Illuvatar, granted the two lovers second life, both mortal. Luthien did not become human, merely mortal. And Idril likely never made the choice; she and Tuor sailed to the Undying Lands and their fate is unknown.

I am not sure if there is a right or wrong answer for this one. The main question is:
WHY DO ELROND'S CHILDREN GET TO CHOOSE WHICH RACE TO BELONG TO AND ELROS' DO NOT? I am not talking about later generations for Elros' Line, only his son Vardamir.

Any thoughts?