I recently answered this question over on Goodreads:
I'm a polygamous reader, although it's usually a new book with a reread or two. When I'm tired or stressed, it's better to curl up with a well-loved story rather than having to pay attention to something new.
original link: https://www.goodreads.com/blog/show/1227-monogamous-vs-polygamous-reading-which-type-do-you-prefer?page=1
I continuously read my favorite books over and over... but I have so many it takes me a few years to cycle through them all. :)
Reply to Facebook comment.
I used to only read one book at a time, until my to be read pile became dangerously large.