With all due respect, NO, not everything is online. Only a small chunk of the world's print collections have been digitized. Also, not everything online is free, or available at all to most of us due to a messy web of copyright restrictions around the world. Yes, much of what is newly published today comes in digital format as well, but what about the thousands of years of printed records we have behind us? If you think "just digitize them" is a solution, I can tell you that librarians and archivists like me have been doing just that very thing for decades now and have only made a tiny dent in the world's knowledge supply. Digitization is a slow, costly process that has a myriad of legal pitfalls in your way due to copyright. And even if we wanted to only buy digital copies of new publications from here on out, don't think that the price you pay Amazon for a kindle book is what libraries pay for our digital books. OH, NO, we pay a complex and exorbitant pile of money for licensing fees to the publishers (10x your price or more) EVERY YEAR, who often then limit how many people we can check it out to, for how long, and then sometimes if you buy access to a big book collection they will randomly remove a bunch of books from it with no warning. This idea is ludicrious.