Well, not-so-prime breeding age is still has reproduction potential greater than zero. And the social effects still matter, with the interplay between sexual attraction/ desirability and all the other social factors. So extended sexual attractiveness might be a side effect of something else that is evolutionarily advantageous (including correlation with prime age sexual attractiveness): being athletic and smart and funny and charismatic are all attractive traits that have functionality outside of just reproducing.
Sure, but there’s no evolutionary incentive for people to be sexually attractive after prime breeding age.
Well, not-so-prime breeding age is still has reproduction potential greater than zero. And the social effects still matter, with the interplay between sexual attraction/ desirability and all the other social factors. So extended sexual attractiveness might be a side effect of something else that is evolutionarily advantageous (including correlation with prime age sexual attractiveness): being athletic and smart and funny and charismatic are all attractive traits that have functionality outside of just reproducing.