BigBlue, I assume they do, however, they probably have not had to think about it in years. Milk no longer comes from udders. It comes from convenient plastic containers. Eggs don't come from chickens, or ever get dirty. They are perfectly clean, and come in egg cartons. Butter comes in a tub, or square carton with wrapped sticks. Steaks, roasts, hamburger, stew beef, come from foam trays, as do most other meats. It's been this way for years. Any thoughts on how it got there involves it being on a refrigerated truck, and stock clerks moving it from the trucks to the shelves. Like I said, far too many people are too far removed from their food sources today.
You're right. It was certainly eye-opening for me when this city girl went to live, with her DH, on a dairy farm. But far from being repulsed, I found it miraculous and magical. Guess everybody doesn't... but that's their option.