Women don't realize how easy it is to keep up their SMV. Literally all they have to do is not be fat (opposed to being in shape). For an even slight above-average looking woman (given she's not fat), she'll have a revolving door of suitors decades younger than her as it's been established.
Men in the US are so desperate for a woman who isn't fat and is considered "pretty" that a woman's age hardly matters the way it used to or biologically should.
Men in the US are so desperate for a woman who isn't fat and is considered "pretty" that a woman's age hardly matters the way it used to or biologically should.