Why are women attracted to a man's ass? I went out to lunch with some co-workers today and some of the girls were joking about how one of the guys had an 'old man's butt', i.e. not much of an ass. I've never really understood what the attraction was other than maybe the muscles (like washboard abs, big pecs, etc). I'm not much of an ass man (much more fond of tits), but I think on the flip side, men focus on women's butt's because of their round/curvy nature. I've also heard that it may be more innate in that wider hips on women suggests to men that there is an increased ability/ease of bearing children.