Wild life need a variety of foods. If they start getting fed by humans they will stick with the easy meal and not get the variety they need. I am not sure about the south, but in the north people have kept corn feeders out and deer have been found "starved" with bellies full of corn. From what I read they do not digest/process the corn in the winter like they do in the summer so they shouldn't be getting it. They don't know any better and keep filling up on the easy meal.