I am really curious. It does not have to with women being fertile. These guys are the one who avoid marriage and kids or marry very late but suddenly they care about women being fertile. It is just a bullshit excuse to justify this dating preference. Even if a 90 years old woman was fertile, she would be still rejected because she is not young enough. Guys in their 30s,40s,50s also want young women. So if (some) men prefere only young women, a woman also can prefere only tall young men.