This is related to people disliking the idea that Aragorn might want to save Middle-Earth because Arwen is dying (which I really do relate to her giving up her immortality, which does mean she's dying and Elrond would totally think that that counted as imminent doom, since he still is immortal) instead of just because it needs saving. But I think it's good to have both impersonal and personal reasons.

This attitude, IMHO, springs from the general fannish dislike of Arwen, as well as the idea that having some personal goals would somehow make Aragorn less heroic. A hero, by popular notions, has to be perfect and above ordinary desires like the desire to protect his girl. Thus in fanfiction we get the PerfectlyHeroic!Aragorn who couldn't care less if Arwen lives or dies.

Swatkat