I must disagree with the statement that "no-one hunts with an M16"!! Actually, some forms of infantry combat are the ultimate hunting experience! However, the M16 cannot be equated with a standard bolt action in which the entire action is open to the elements. The M16 is totally closed until the ejection port opens when the first round is fired!!
It is true that, under most circumstances, the push-feed type of bolt action is entirely satisfactory. But when one is in the wilds of Alaska, the Pamirs, the African bush, or some other exotic, remote place, there can be a definite advantage to a massive extractor claw that can drag an empty round out of the chamber under adverse conditions!! You don't need it until you need it, then there's no substitute for it! Why not have it to begin with??

Keep yore powder dry!!