I truly feel there is a passion for books that will keep them around, regardless of technology. Everyone who prefers books to ebooks, including myself, seems to become so impassioned when the topic comes up: They love books and they will fight for their books. I also agree with those who have made the point it is an art form, and that is one of the reasons it will remain.
Also, and I know this involves children's literature and not adult, but what about picture books? Is everyone really going to get rid of that? It's so nice to have a child interact with something that doesn't need a charge. I've seen kids read on iPads, and it's not the same. They don't engage with the text in the same way. And this is just personal preference, but I myself would never want to sit down with a tablet or kindle at night to read to my kids before bed.
I'm sorry this is turning into a rant, but I love books. I love the weight of them, I love displaying them in bookcases, providing me a nice visible journey of where I've traveled in the land of stories. I love physically turning the page, the smell of the paper, and how each printed book feels different and is unique. There is an emotional connection to books that I just can't find with ebooks, and I know many others who feel this way as well, and they're not old, like myself (I'm 27). We would have this debate in college literature classes and those who preferred books were always the majority.
So, in summary, and I could be very wrong, time will tell, but I think books are here to stay because the love for the printed text is just too strong.