I spent most of my life at least an hour's drive from the nearest bookstore. I "ran out" of new books on a regular basis. The local library system couldn't keep up with me, either. That's when my habit of "re-reading" favorites got started. Now that I can, I indulge myself by collecting everything I might possibly read. The idea of having anything I could want to read just a few clicks away is profoundly satisfying to me.
Oddly enough though, I still re-read. It's nearly time for my annual reading of "Be Buried in the Rain" by Barbara Michaels