It's a full life, if a trifle banal

Interesting. I hadn't thought of it quite like that (the longer age spans make age differences work differently, perhaps). I think there's a tremendous element of willing self-immolation in Dorothea's choice of Casaubon, and also a lack of other intelligent options presenting themselves. I certainly don't think the latter would apply to Finduilas. At least Denethor isn't impotent...