If that's the case. I Love a great pair of fleshy mounds; be they upon the chest or situated behind and above the vagina/anus. For in this land; all were created equal. All are worthy of the choice of being squeezed, spanked or sucked upon.
I think it's some weird existentialist sub plot going on.
If one were to choose the ass or lower portion of the anatomy, one would derive that that is how one views ones self. The bottom of the heap and surrounded by the darker things in life.
Choosing Breasts, being higher up; much more positive in self appraisal and closer to the mind. The well of thought and being.