>>13717625a bigger butt means that the woman is able to survive without a male providing for her.
being attracted to a big butt means that you subconsciously don't want to put in the effort to provide. It's even scientifically proven that men prefer "less feminine" women for long term relationships.
I've also noticed that when I eat a carb based diet with more dairy in it, my sexual tastes start becoming more "modest" and monogamous, preferring 'pretty' girls over 'curvy' ones