People continue to buy them because they are comfortable with it. Why does it matter what other hunters buy? You don't want a 30-30, fine. I prefer my 7mm Mag myself, but if one of my friends wants to shoot a 30-30, i don't care. A 30-30 will kill a deer under 120 yards, which is what most casual hunter's max range is anyways. By your rationale, nobody should ever muzzle-load, since there are better options. Is the "killed more deer" a stupid argument? Sure, but why let it get under your skin?