Your facts are wrong and I think you need to do a little more behavioral and scientific psychological research. Women never really reach their prime. They are constant sources of sexual pleasure for themselves and perhaps foreign to others but men reach their prime in their 40s not their 50s.
These so-called pointers of yours are strictly based on your particular experience. You can’t lump old man, or a woman, oral anything into a category like that it’s simply not true.