The end of books as we know them?

As of now we are entering the future of technology.  Im in college and almost every piece of work that i turn in is online.  My math class has that book online and im not saying that this a bad thing.  I guess by the world trying to go green that with electronic books we save paper and save trees.  Now we have the ipad, books are a thing of the past and may change literature as we know it.  I really don't enjoy reading but this makes it harder with a strain on my eyes from the glare of the screen.