Are all books published in eformat or only some? If only some, what types are eformat and what types are not?
No, not yet. But far more now than a couple years ago. It's not an instant switch, but the trend is certainly there.
I don't think there's any particular genre that's ebook-oriented. I use iBooks, and I've got books from a wide variety of categories. Classic works, fiction, non-fiction, reference books...
I prefer reading books over looking at a computer screen myself. I like the feel and sometimes the smell of a book that I am reading. And thank you and everyone else for answering my endless questions. Books are important to me so I need to know what the future holds. I don't have any illusions of knowing everything and when I can get good information and advice, then i will graciously accept it. Thanks again.
Book readers tend to mimic the look of a paper book, and a lot of effort goes into things like cutting glare. Obviously they cannot reproduce the feel or smell. But again, it's also nice to be able to carry an entire library in your pocket.
Because we're divers, we travel a bit. And the airlines do NOT allow much luggage these days. And when we're laying on the beach, (nitrogen loading requires you spend a certain amount of time above the waterline.) I like to have a drink in one hand and a book in the other. About 11 years ago, we went to England. We took guide books, as well as books about places we planned to visit or stay (Warwick Castle, Amberly Castle, Thornbury Castle, Caverswall Castle, Arundel Castle, etc...). I also took a few books for entertainment reading. Doing that today would cost us $$$ in excess baggage fees. Dive gear for two isn't light, and adding 5-6 books would be crazy, when I can just load them on my iPhone.