We utilize both corn and food plots where legal. Surely the food plots and corn are different, but both can be useful when done correctly.

Corn is like wine, you have free wine at a party all the single ladies will be tipsy before the DJ even plays a terrible Beyonce song. We use corn to attract and hold does as we do not shoot does on our lease. We think that this works as stated previously because during the rut the does will come out and munch on a little corn and bachelor buck comes on in looking for some fun. I've not shot a buck eating corn, but I've shot a bunch checking does that were eating corn.
Maybe I'm right, maybe I'm wrong; but I'm paying for the corn so I'll use it as I wish.

Granted it grinds my gears when some dummy sees a scrape or rub and automatically wants to go sling corn out right next to it.

Food plots are practical and great ways to provide forage for your deer population. I love going to the camp and bush hogging, discing, sowing, discing in, fertilizing and watching the plots mature. Guess its just the farmer in me.