There are 2 kinds of men on this world; the boobies and the booties mens!
Which type you are is probably not depending on what you like, but based on your genetic blueprint.
A research by the University of Texas has recently shown why we men prefer round shaped asses.
The reason goes back even further than your initially deleted browser history;)
A Long, long time ago, when we humans roamed the earth, it was important that we could keep moving to survive. Standing still was dying. Even your pregnant wife had to move on in dangerous situations…
If was wiser to choose a woman with a rounder buttocks ..
A pregnant woman with backcurves was better be able to move their center of gravity, so they had more balance while walking.