>>119308037>20s as being "old"it depends on the audience, I guess.
If you're a normal dude looking to date, 30 is fine. Lots of women can keep it together into their 40s. Remember the 00s when "cougars" were a thing? And there are women who can bring it well into their 50s and 60s.
If you're looking to exercise "hot girl privilege", like flirting your way out of shoplifting charges, getting a table at a crowded restaurant, getting guys to laugh at terrible jokes... that's the kind of stuff that works just a little less each year. It might not go away entirely at 25, but it'll just go away a little more slowly, as men start to treat them "normally"...
The kind of spoiled rotten men who demand the very best and will pay you $130,000 to keep it on the down-low, will DEMAND 25 or younger. If they're spoiled enough to own an island, 18 might be their upper limit. American talk radio asshole Tom Leykis would always say "it's impossible for a woman to be a 10 after age 30" as part of the so-called wisdom he dispensed on the radio. Indeed you don't even need to be talk-radio rich to be this picky; some guys post "2/10 would not bang" on every YouTube video where the woman's over 26 and they feel like a big man for a nanosecond. There's a brave new frontier in cruelty to be explored in ageism and the Internet is up to the task.
But generally, people who exercise basic human kindness -- neither bullying nor cloying supplication -- will have more fun in life, befriend a wider variety of people, and experience more of what life has to offer.
