Are Books Themselves a Thing of the Past?

I know hard copies of books are on their way out. I also know that percentage-wise not that many people are reading books. With almost anything you want to know can be found online, will even ebooks be on their way out? Will we soon turn into an online society of people who simply read Facebook, blogs and online sites for our information? I fear this might be happening gradually. And with the public not reading books that much to begin with, it seems less of them will be doing so in the future. I wonder what this will do for authors and publishers? It'll be interesting. Publishers exist to make money. With fewer readers there will be fewer books published. There are good things about this since anyone can participate. But how do we know what information to trust without the editors who were known as the gatekeepers in the past. Thoughts?