I would agree with most on here that say that people should kill as many deer as makes them happy (assuming it is legal). That being said i think shooting 30 deer with a rifle would kinda lose its thrill after awhile. Believe me i love to hunt with a rifle, but personally if i got that good at it (or it was that easy, depending) i think i would switch it up and use a shotgun/pistol/muzzleloader/bow to make it a little more challenging. That being said if they are having a ball wackin' and stackin' em with rifles and they aren't going to waste, then more power to them.