Mel, its because some people are more concerned with superficial things. Big breast are superficial, so is a big ass even beauty. As we age big breast can lose form and sag, big asses get too big and looks fade.
Give me someone who has something between their ears. That's usually permanent. If she happens to have that dynamite figure that's a plus.
The bottom line is if those big breast and that big asses can't hold an interesting conversation or keep my interest I'm gone. No one loves sex more than me but we have to have more in common than her T&A.
BTW women are guilty of this too.