Metal Boxes

I hate the metal boxes that the archives stopped using decades ago. Whenever I touch a metal box, I feel as if I just got tetanus. And its not exactly easy to keep track of files when they are piled on top of each other. I know that it can't be easy for archivists to stack dented metal boxes. I would like to know why any of these boxes still exist at such a major institution. They've re boxed many torn Hollinger boxes, so why not replace metal boxes?