[maxman]

Buttocks and breasts are not very indifferent. They are mostly filled with fat.

I would think that it is the roundness and wiggly form that looks attractive to heterosexual men. Little wonder why some men grope women's buttocks and breasts. I am not saying that groping is right or wrong. The buttocks can take a bit of a slap or smack without causing much harm or injury. However, the same cannot be said if a man slaps or smacks the breasts.