I've used a Palm III equivalent (actually made by a company called Handera, much better designed than the Palm) for reading books for at least 5 years now. Monochrome so I get about three weeks' intensive use on one recharge (compared to maybe a day with most of the current crop of devices). And mine has a very high resolution screen so it's easy to read small print. I currently have over 100 books on it, including the Bible (counting as one book), complete works of Shakespeare, all books by Dickens, Tom Clancy, Clive Cussler, dictionaries and other reference works, and many others. Even so I'm using less than 5% of the capacity. This isn't new technology.
I also like reading a paper book, but it's so convenient to have so many works all in one compact package. And I have a diary, address book, memo pad, voice recorder etc all in the same package. Plus lots of computer games.