For me, it's the best use case for how I read. I keep mulitple books and go between them. I love the old public domain books, and how dense they are with their prose. But I rarely read them all at once. I will read a couple of chapters for a day or so, then maybe for a short break, I want something lighter and more modern.

Being able to carry multiple books around is my fav thing about ereaders. Of course, sometimes I get stay in the mood for a book and finish it straight through because it's gripped me so much, but more times than not, I read based on my mood and time I have.

This is the first time in a while that I've had my two current reads both be modern. Mostly I go back and forth between early 20th century lit and modern stuff. Usually read one for a couple of days before switching out. Lately I've been reading at a much quicker pace, so really going through a lot of great books.