Most, if not all, free ranging whitetail bucks are culls. Genetically inferior in some form or fashion. So you have a few choices: 1) shoot em all, 2) shoot some of them, or 3) let them develop/grow to be the most they can be.
Unless you are high fencing and buying straws for insemination at $10,000+ a pop, your little trigger finger is not going to change the antler configurations in your neck of the woods.
A trophy is in the eye of the beholder. However, a mature deer has done all he is able to do and I can appreciate and respect that not all of them are going to be B&C, but are "trophies" none the less, regardless of antler configuration.
Cull, is a four letter word of meaningless significance in free ranging deer herds.