It's actually 23.
For me, its 25. In other words, I would still agree to fuck a 24 year old woman, even tho I consider her close to being expired. And it seems that women know this too. I see many stories of women who say they feel expired after reaching certain age and no longer getting attention from men. Naturally, men seek younger women. there are some degenerate men who seek women their own age, but those are not majority. I would never date a 30 year old woman because I know that she was used many times by many men, and now has emotional baggage with her and probably bunch of mental issues. I know that women past age 30 lower their standards, so even if you arent very hot man, if you approach a single woman who is above 30, she will hold onto you because she is single and knows she wont get much more opportunities. Young women get a lot of guys hitting on them, and they can keep standards high. Women who are 30 or worse, 35, have almost no men hitting on them, let alone men willing to marry them.
this is because women have logically screwed themselves over. Younger women prefer older men, and this seems to be almost universal, and this leaves a bunch of young men single. However, young men dont prefer older women. So once woman becomes older, she has no access to young men, and old men her age are dating younger women. And younger men just wait till they become older men to date younger women.
So younger women have literally screwed their older self over by prefering older men, and maybe older women would have some chance if younger men prefered older women, but most dont.