How do you interpret this quote by Nietzsche?
Great post.
Apart from evolutionary arguments, there's also the idea that we get intellectually/spiritually bored with anyone we can predict/control. We may be sufficiently sexually or financially interested to hang around, but the ideal is beauty, worldly resources,
and a personality that challenges/inspires one's own. Because I don't know what they might say, I don't know what I might say in response. Such lovers help one another enlarge themselves. They increase their individual values as a team.
Those who settle for non-challenging relationships appear to choose beauty and wealth over the mystique of personality (which is roughly art and science). This might help explain why even high class prostitutes aren't generality respected. It also explains the taboo on older men dating females in their 20s. The idea is that sublimated or developed personalities (desirable in themselves as not predictable or creative) will have and will to continue to prioritize personality themselves.
I can imagine, however, an older man or women compartmentalizing the satisfaction of the itch for personality. For instance, an intellectual/artistic man may scratch the itch for unpredictable interaction among his friends and be content with a beautiful and sweet but otherwise predicable lover. But why should she tolerate this situation? If he isn't famous or rich, she probably won't. (She is by assumption not impressed with his unintelligible chatter about Plato or Heidegger among his friends. Unless he's a professor with a Volvo who takes her to nice cocktail parties? Or a musician who can take her backstage. The idea is that whatever the hell he's into that she is not intrinsically interested in at least opens worldly/public possibilities that smell like 'alpha' or are at least fun.)
A last point comes to mind. The man who needs and seeks women is already a little laughable. I'm still addicted myself, but my itch for freedom and control pushes against this addiction --unsuccessfully. The the spirit is willing, but the flesh is weak. A relationship protects one from the obsession with the ideal partner and the anxiety of dating, allowing one to get some work done. [For me true romance would be lovers working together at their shared, highest ambition. They might co-write a movie or a scientific paper or play in a band together. But this kind of compatibility is like winning the lottery.]