Incidentally, Finrod Felagund never married either. He was probably the greatest king of the Noldor of all time, second only to Thingol as a Middle-Earth elf king. (Gil-Galad, becoming king after both of them were dead, can't really compare.) Thanks for quoting those verses, though we're a bit early for them yet. Still, they're beautiful!
Finrod Felagund was never High King of the Noldor, but I agree he was the best of the Noldor. Honest, couragous, a Great King. He keeps his oath and pays a Debt-of-Honor to Beren, sacrificing his kingdom and even his life to help in a hopeless quest dispite the treats of the sons of Feanor.
I wonder if it may also have something to do with the Doom of Mandros and not wanting to perpetuate the curse on thier children?