This is why I've stopped buying books on kindle. It gives Amazon the power to censor your book library, and it would not surprise me at all if we see them exercise that power soon.
Especially given the name of the device...
I don't see any alternative, but just wanted to make that point.
I originally had over 200 books, all read, gathering dust so I gave them away. They took up space and attention and were a pain in the ass when I had to move house.
As for the convenience, I do a lot of hiking and it’s not much fun dragging two books from the expanse series with you versus a kindle in a ziplock bag.
I have physical copies and PDFs for technical books and reference material though. And a lot of text files.