I gave up on my first paperwhite last year (10+ years old). Would randomly lose its charge, which was annoying when bringing it on trips (and often not having an old micro-usb charger lying around). And from being stuck into all kinds of pockets and bags without a protector (half the use was it fitting in my pants) had seriously scratched up the screen. The new one I got is nice, but other than the old one being beaten up, I don't notice much difference. A bit faster to click around, but in the end it's mostly the same.
Mine would have longer and longer delays on each page turn when I started using it again last year. It's a 10+ years Paperwhite as well.
I jailbroke it and installed KOReader. Suddenly, no delays, great interface, wi-fi sync with Calibre. I might replace the battery one day, but it still lasts 2-3 books.
