I don't think what the book claim is accurate. I can't talk about most men or women, but at least, I, being a woman, didn't think like that, ever. Neither do I think the men I know think like that. For some men, yes, I can see that obsession for younger women to some level. But then I also see they want an older woman's maturity and understanding from those younger women, which is contradicting in nature. For some other men, I see that they like their current partners, of almost the same age as them, but when these women sometimes get angry with them or demand these men to act maturely, then only these men lament saying where's than sweet young wife of mine, but otherwise they seem fine. And a third category of men that I see are pure advantage takers. So they basically whore around, sleep with both older and younger women or at least try to sleep with all of them and take as much benefit they can take from all of them. But in normal conversations, I would not think about those whore men, would I?