Very often when I look at a before and after picture I think to myself, “I’m not sure which person I’m supposed to find more desirable.”
I could tell you which person I find more desirable, but it’s not always the after picture.
I could tell you which person I find more desirable, but it might change if I spent a few months getting to know that person.
I could tell you which person I find more desirable, but that might change once I know more about myself.
Yes, based on pictures I can generally tell who’s good at pull-ups or who might be able to out-run a hyena. But desirability? No, that’s entirely individual.