I get nearly everything from the library. I honestly don't re-read anything. If I absolutely love a book, I might buy it to proudly display on my shelf, but even that's rare because I try to save money.

I've also DNF'd enough books from the library that I know buying everything I want to read would be a huge waste of money. Or they're just okay--worth finishing but didn't amaze me.

As a bonus, I find that the "pressure" of having a set time by which to read a book helped force me back into reading more.