[Lalaith]

I think another important point to remember is that Eowyn's marriage to Faramir is not just about Eowyn as a woman and Faramir as a man, they are both representatives of their respective cultures.

Rohan, while of course thoroughly splendid in many ways, was a vassal kingdom, its people and culture were more primitive than those of Gondor. Remember, Gandalf talks about their lack of literacy. Eowyn is marrying the greatest man in Gondor, next to Elessar himself, a man in whom "the blood of Westernesse runs nearly pure." Faramir's interests are more "elvish" and elevated - lore, healing and wise rule. By having her turn her back on "songs of slaying", I think Tolkien intended to give Eowyn a cultural step upwards.