Earlier quoted context omitted.
Another benefit to paper books, in my experience, is it's a lot easier to remember the rough location of a particular passage (towards the front, middle, near the end, etc.) than with digital A progress bar really doesn't replace the context of the stack of pages behind and ahead of your current page.
It's pretty easy to highlight passages with most e-reader software. Some even let you write a note that goes with the highlight. You can then look through a list of all highlighted passages.
Indeed this is one of those things I miss about paper books. When the above happens I have a terrible time finding that on my Kindle. Most of the time I'm not able to, while with a paper book I didn't have that problem, mostly.