Some guys say older women are "hot", when few truly are.
This is because the older women have a sense of sexual urgency. They're easier -- hungrier.
"Sexy isn't always slutty, but slutty is always sexy." -Rollo Tomassi @RationalMale
^that's why guys think older women are hot.
For unattractive guys going after older women is like a glimpse into an alternate reality where they're attractive and get enthusiastic responses from actual women