Genetically, men are more expendable than women are. Historically for our species around 40% of men and 80% of women reproduced. Alphas ruled the past. But the biological world isn't static and significant evolutionary changes can occur in the geological blink of an eye. Today in the US the gap has narrowed substantially. The GSS shows that 81% of men and 86% of women who've made it through their reproductive careers have procreated. Genetic continuance is a lot more egalitarian than it used to be, especially for men. Fecundity is now a beta trait. Still, while we're not the same people who lived during ancient Roman times, let alone the same people as the first neolithic agriculturalists, we're not an alien species to them, either. Grok is relevant to us, even if he isn't exactly us.
If men are more expendable than women are, a presumable corollary is that, from a woman's perspective, characteristics of sexual attraction in men are more varied, more numerous, and less ubiquitous than the characteristics of sexual attraction in women are from the perspective of men. It takes a lot of time and effort for women to reproduce, and we need just about all of them to do it if the species is going to survive and prosper. Consequently, men overwhelmingly focus on signs of maximum fertility: Waist-to-hip ratio of 0.7, healthy and supple skin, perky breasts that appear to defy gravity, lack of current impregnation, etc. The rest is mostly marginal stuff.
We can afford to be less conservative when it comes to men's contributions, which works out well since male contributions are the stronger drivers of evolutionary changes. Women aren't primed to detect signs of fertility in men. They aren't any better at identifying said signs than (disinterested) men are, and it's presence is usually uncertain (though presumed to be there) unless the last stages of intimacy reveal otherwise. Yes, older and fatter guys are more likely to have issues, but even among these 'at risk' categories, most are capable. Pubescence is just about the only prerequisite--once that box is checked off, female attraction moves on to assess a whole host of other characteristics: Status (ie command of resources and of other people, not evincing a need of approval from other people whether they be male or female, etc), humor, height and general physical fitness, intelligence, kindness, self-confidence, etc, with different women putting varying amounts of emphases on different dimensions of a more variegated (and sometimes seemingly contradictory) suite of desirability markers. Men are more interesting, if not necessarily more infatuating.
Tell me if I'm missing something, merely stating the obvious, or being overly presumptive with an amateur's understanding of evolutionary psychology.
GSS variables used: CHILDS, SEX, AGE(40-65), YEAR(2000-2012)