I have very specific needs regarding what I want to explore, and it involves browsing through a LARGE number of books, so buying tons of books from Amazon isn't really the right solution anyway.
Also, once I'm freed from the limitation of only visiting places that I can check out from — that lets me visit SO MANY more REALLY top-notch libraries, in the various colleges around the city. (and these libraries tend to be open much later, especially on Sunday and weekday nights!)