Context, I’m 30 now and i will find women my age and up attractive, but 15 years ago a 35 year old women would never have been attractive to me.
As I’ve aged younger women are less and less attractive (thankfully)
But when I’m 60 will 60 year old women be attractive to me?
Self-conditioning.
You like people you can have a meaningful interactions with, you are more likely to find sexual partners in that group, you fantasize about current or prospective partners, you end up building an attractiveness pattern that matches a certain age group.