I prefer to read paper books, but there are three reasons I generally don't. a) Font size is getting too small for me. Years ago I changed to large hardcover (sometimes large but softcover) versions instead of the smaller-sized books I used to buy, simply because the fonts are larger then. With the Kindle I can set the font size to what I want. b) Weight and size. I read on airplanes, in hotels etc. I read a lot and I read fast, so I bring more than one book (and even that is too big and heavy, see a). The Kindle is king here. c) Storage. I don't have enough room for more books at home. I've sadly had to dump lots and lots and lots of books, even though I like to read the same books again (and again). Tried to sort out those most unlikely to get re-read, but.. I can't even give them away. Used-book stores have more than they can handle.

As to the Kindle - I've never felt any urge to tinker with anything, except when I'm forced to: I set the font size, that's one single operation, forget it (at least for that book). If I occasionally read at night I have to add some backlight. And that's about it. I just read.

What I miss about paper books is the nice cover (color..), how easy it is to "see" the book (bookmarks, flip it open somewhere else and so on). In addition to actually reading it. But the Kindle is actually very nice to read (unlike phones, PC monitors, tablets, all of that. I can't ready more than a couple of paragraphs on LCD displays)