It isn't confined to people at all. Nor is it confined to material posessions or food: even semen, in a way, is an offering, for the hormones in it benefit the woman even when she is not in the fertile phase of her cycle.
It also can't be fairly said that offerings are strictly male to female, either. Don't we provide you studs with offspring? And what about all those tasty meals, platefulls of homebaked cookies, pies,and cakes, and hand knitted socks, scarves, etc?
Basically, one needs and wants to provide physical evidence of our fitness as a mate and companion (not only as a 'provider'). I don't find this to be entirely shallow, since talk is cheap and the harsh lessons of reality can shatter many a poorly baked dream.
Mutant and I are not concerned about status symbols or impressing one another. YOur ideal stated in B is basically what we have. Nevertheless, we still enjoy treating each other, showing one another the good and wonderful things in life and sharing the joys of the earth, even if it is only as simple as a wildflower, a smooth stone, or an autumn leaf. I can't see anything wrong with this.