It’s a loose analogy and can go a few directions for sure, but in contract a certain level of commitment is expected, and this commitment to “team”, practicing, training, playing, improving together through wins and losses is what holds everything together. This view is marriage. Legal contract or not.
Marriage certainly isn’t for everyone, however, and casual or even mutually useful relationships can hold value, as long as both partners are aware of the sentiment. I think you have to be comfortable in a coexisting situation without much buy-in here though.
I would imagine for a man to remain desirable on a renewable basis would likely have to age well, build solid financial stability, create a sense of security in general. Men truly don’t need women, even in our DEI time. And conversely to some of the chats here, we aren’t groveling desperately to be allowed to have some female attention.
As a man ages, assuming he takes care of himself, he becomes more appealing on almost all accounts, assuming he’s living his life well. Women get fat and ugly and traditionally don’t provide over and above what a man can do for himself and would lose appeal over time.
So as an aside, I think your scenario would actually favor men, but would still undercut the whole point of a committed relationship.
I think love is also a factor. Undefinable, but everyone who has legitimately experienced it knows what it is. Love begets commitment, contract or not and transaction will take a backseat naturally in its presence.
Anecdotally, I feel like I’m a handsome guy. In shape, white collar look with a short and manicured salt&pepper beard, over 6ft tall, not in the upper crust of wealth but I could certainly change lives et cetera. I could find another woman pretty easily when we are arguing, on a different level, encountering a frustrating situation and on and on but I love my wife and I don’t want to. Our marriage is simply an outward sign of that, but our relationship would exist without participation in the ritual.
I’ve had situationally convenient relationships, and they are fun. They can be fulfilling in their time, but they are not the same thing and a discussion trying to marry the two is an apples and oranges endeavor.