For me it depends on the food and place.
Dry food in my own home (everywhere besides the bathroom) on the floor or table, sure, yeah I'll eat it!
Wet food, only if it lands on the table. Nope to the floor, since I've got a cat and I know his feet have been in the litter box.
In public spaces, if the dry food drops onto a clean table, sure. Anywhere else, heck no.