I also like the Kindle purchase experience. I usually put a sample in the Kindle, check it out, and then with a single click I can have the full book in minutes

I also like the Kindle purchase experience. I usually put a sample in the Kindle, check it out, and then with a single click I can have the full book in minutes without going to my computer or phone. Calibre provides a very good service, but it can be a bit puzzling in terms of UX, also getting certain pirate books is a big chore and might require visiting dodgy sites. But the reason I stopped downloading books is that I often ran into small issues, like footnotes or a table of contents that didn't work correctly. The last book I remember downloading was "Thinking Fast and Slow"... I ended up purchasing it on Amazon because every half page it had a word duplicated, with the duplicate slightly scrambled srcambled. It was maddening... probably planted by the author , Daniel Kahneman, as a psy-ops DRM device.