Seriously? Now that's amazing.
i don't consider it amazing. If you have any old stuff with springs likely they still work after many years. If you go to Grandma's house and she is hanging up the laundry the clothes pins might be 20 years old and still work fine. There is little reason for springs to just quit working. I shot a Civil War Spencer rifle that was made in 1864 and the magazine still worked fine and I assume it was the original spring. I've shot many Winchester rifles that were made before 1900 and the magazine springs worked just fine. When I ran a gunsmithing shop for many years I do not remember ever changing a tubular mag spring, ever in anyone's gun. The striker spring in the pistol on your avatar is always under compression are you going to change that? Or worry about it?