Websites die constantly. The sheer size of the internet makes it feel like a permanent fixture, but individual pages only live an estimated 90 days before they change or vanish. At the same time, every single page has potential historical value. Maybe a future scholar will want to read a local news article that disappeared when the paper redesigned its website, or a political candidate is purging troublesome old statements. Perhaps someone will just want to revisit a video that made them laugh decades ago.