My husband has an Apple computer from 2007 or 2008 that can no longer access our bank records because it is so old and we use a new laptop for it. He refuses to replace the Apple, insists it will last another ten years.
Same for my wife. She’s been using a 2006 Macbook for years, works fine but she was complaining that she can’t access the new features that are in the newer machines OSX (Yosemite/El Capitan) that our relatives use like sharing of photos and movies (instant shared streaming from their iCloud accounts that I get on my Mac Mini). Older machines are limited to Mountain Lion or thereabouts. I recently replaced it with a new Macbook Pro for her use, and she is happy once more. Interestingly, the 2006 is faster what with the SSD solid state drive I have in it, compared to the new machine. I’ll upgrade to SSD later on for the newer machine, best way to make it fast. Meanwhile, the 2006 Macbook is now being used for my workshop driving a 3D printer or playing movies.