Please don't take this as being cocky, but I am darn good at ranging using my eyes and experience up to 50 yards using the graduation method. Spot a tree thats at 20 yards, find another tree or sapling that is another 10 or 20 yards. Maybe not on the button at 50, but within 2-3 yards at 50. I even checked it in Colorado when we were shooting practice targets. A buddy had his rangefinder to verify after my "guesses". Besides, in the areas I hunt whitetail most of my shots are at 20 yards and less. Shooting 3D really helps, main reason I shoot 3D these days.

I am not suggesting a rangefinder needn't be used by those who use them. Its just a matter of who needs them.