Girls in their 20s are looking for fairy tale romances and marriage, and the white picket fences etc.,
Older women look at you and know right off, they don't want a relationship with you, ...just the sex.
Girls in their 20s for the most part don't know what they want let alone how to express it, whereas older women are more comfortable both acknowledging their desires as well as acting on them,
...and quite frankly don't give a shit about what anyone thinks of them or their "reputation".
plus too, older women have better instincts from the get go, while younger woman have to spend more time weeding out the dogs.