Are Tolkiens Books Sexist?

[Mister Underhill]

(Lack of wisdom at least is supported by the fact that she grasps the tragedy of mens mortality only when Aragorn is dying.)

I would suggest that it’s not Arwen who is displaying a lack of wisdom here. Intellectually grasping that you will some day lose the one you love is not the same as actually confronting the reality of it.

I also disagree with what you characterize as the “only two” interpretations. It usually takes greater willpower and maturity to sacrifice one’s own wishes and desires for the greater good or doing what is right. If she were “weak-willed”, as you say, she would have insisted on accompanying Aragorn and the Fellowship (creating a distraction for him which would have been at least dangerous and at worst catastrophic) or tried to manipulate him into shirking his duty (not just on the Quest of the Ring, but for many years beforehand) and spending more time with her. Her sacrifice of years which could have been spent together with Aragorn under different circumstances is all the more poignant considering her sacrifice of her Elvish immortality to be with him in the relatively few years they were able to spend together.