I'm still using my old, ancient, but not so decrepit Kindle Paperwhite.
I just love the thing, no bloatware, turn WiFi off while reading my books and just blissfully enjoy myself.
My daughter manages our books with her account, we bought "Unlimited free" so that if there is a special book we want, we just "borrow it" for free, and return it as soon as we finish it.
I once connected it to my PC and downloaded all of the "books", but somehow, all I got were the titles to the books. Never did investigate as to why, because I discovered real fast, that setting in my office chair and trying to read a book on the computer is not very comfortable, nor is it handy. dropped that idea fast.
Back to the Paperwhite ereader, so damn handy, goes everywhere I go.