It was said on here before, just simplyhunting over a food plot does not guarantee you will shoot a monster buck at all.
Another point of view is that the research and work that people put into their food plots/crops is a time-consuming hobby. When someone does all that work and harvests a monster buck that deer is more than just meat and antlers, it is the result of all that hard work. It's just like anything else that you work hard at, you do it so that you can recognize the results.