Last time I hunted elk, I fell down a hill.
Classic Weaver 4x was ruined.
Hunt would have been, too, except that old 1968 Remington 700 came with a solid set of irons. Ripped the scope off with the rings, threw it in my backpack, shot a couple of rounds at a rock to make sure nothing else was screwed up, and went back to hunting.
Iron sights, whether main or as back-up, make a heck of a lot of sense to me.