That's true Johnny, but the most popular deer rifle is a 30-06, and a deer doesn't require an '06 either. If you go by just what people need, a 30-30, 243, 25-06 would be what 90% of all rifles would be chambered for. If you take the arguement of not using more than you need and, as you say, limit to 200 yards, shoot the 30-30 is just about all anyone would need for anything except the big bears. That would do away with not only magnums, but 270 Win, 30-06, 280, 7x57, 257 Roberts, 25-06, 45/70, 35 Rem, 444 Marlin, and a whole host of other "standard" chamberings.
I know this is a campfire discussion, but to be truthful, let's include all chamberings that do "more" than is required. It's not a magnum beef when you get right down to it.