Apart from my overdue fees, this applies to me.

This is a bit difficult for me to swallow, but according to a study commissioned by the U.K.'s Department for Culture, Media & Sport, visiting a library gives people the same pleasure getting a raise does (a £1,359 raise, specifically). The study looked at ways "cultural engagement" affects overall health and happiness, and concluded that "a significant association was found between frequent library use and reported wellbeing." According to NPR, however, the study also noted that it is difficult to tell if this is simply a chicken-or-egg argument—it's equally possible that happy people tend go to the library, rather than going to the library makes people happy.