@Spoonikle Nice conjecture. Did your gender studies professor teach you that? I think you're underestimating the mutual emotional connection between the relevant parties. Doesn't seem like we even read the same story. More than that, however, your view is incredibly myopic. You've completely disregarded the nigh-incalculable objective value of the MC as the only person on the planet who can restore these chicks' lifespan, as well as being the only human male to show up in 3000 years.
Let's face it - Even in our world, some women go all in after a good fuck, even and especially if there's nothing to gain from doing so. What do you think's gonna happen to these girls after a few millenia without a meat rod? As much as this artist likes to put the Niagara between their legs, it doesn't even begin to cover how downright, buck-wild rabid (rightfully so) these women would be. And that's not even counting the fact that it'll save their lives; you've seen it here, where they only found that out after the act.
If these women are "challenging puzzles", then I guess the convenience store down the street must be Fort Knox. Dude doesn't even have to say "open sesame", LOL! I can tell you one thing, I wouldn't be as well behaved as the MC in that scenario...