There are a lot of good reasons to plant food plots. I plant about forty acres each year. My primary focus is on deer, turkey, ducks, and doves. I have planted food plots for over forty years - much of that time planting them employed in natural resources with the feds. I have been retired for ten years and the forty acres I plant now is on my own place. Besides just for hunting, you can draw - and hold more game on your property than you could without food plots. I feel the more time game stays on my property, the less likely it is to be killed by someone off my property. Game will imprint on your food plots. I have a different group of does that calls each of my plots home base. Half the doe fawns stay with the doe group. That keeps your deer population steady or growing. Yes, native vegetation can supply everything a deer needs, but deer are lazy and seek out areas with good nutrition where the feeding is easy. I see multitudes more deer in my food plots than my managed native vegetation. Summer Food plots with high protein plant foods will provide extra nutrition for does with fawns and bucks growing antlers. A winter wheat deer plot, if properly maintained, can be a spring turkey plot and a late summer dove plot.
I have probably planted about every seed typically used in food plots in my area. For most of my plantings, I now rely on simplicity. A base food plot of perennial white clovers like durana or patriot for late winter, spring, and summer with wheat planted into that plot early fall for a quick green up for hunting. The wheat is for hunting and the clover is for the deer. My straight up dove plots are browntop millet, and my duck plots are flooded Japanese millet. These plots use relatively inexpensive seed, they are easy to put in and easy to maintain with mowing or chemicals. They are pretty dang hog proof. They are mostly army worm resistant because of timing and crop selection. Deer dont wipe them out. And wildlife has a food source year round.