Off topic but, I think that really gets to the core of our problems with food in western culture.
Sharing food is the only bodily function we share publically. We don't use the bathroom together. We generally sleep and procreate in private with select people. We don't give play by plays of our breathing or hygiene, even if they are technically public.
But food, food is such a powerful cultural symbol that we share it with our loved ones and even complete strangers. The power of food is so great that it's the centerpiece of many cultural touchstones (the harvest festival, the sacrifice, the fertility ritual). We talk about the food our grandparents made in tones so reverential it might as well be religion.
But when we get our lunch we get food in our cars and eat it alone. It was prepared by someone we didn't see and will never know. Not that long ago even convenience food was prepared by a person we knew. I realize that most of us don't do this every day or even most days, but certainly the rise of eating as an exercise of convenience and driven strictly by our taste buds has coincided with the rise of our fat society. I know that correlation does not equal causation, but in this case it seems likely to me that one has led to the other.
We've already started to disconnect from our food in dangerous ways. Why not add a new meal replacement if it's healthier? And it's not like the internal combustion engine made us a bunch healthier either.