E-Books

Today I went to the library near my place. I love reading, so I used to have a big bookshelf covering a wall of my room, but I had to sell most of my books to a book-recycle shop before I went to Africa three years ago. There was nowhere to keep them during my absence. In Africa, I really missed reading. I couldn't get Japanese books there. Some my friends were enjoying e-books, but the Japanese e-book industry was still fledgling, so they didn't have enough variety. I couldn't satisfy my thirst for books there. After I returned to Tokyo, I started to think that I should buy only e-books, because I can't take all my printed books if I move somewhere. But, I found that only books published recently are available as e-books, and older books aren't, and we can find many manga, novels for young adults, business books, and self-development e-books, but we can't find enough volumes of other genres. I heard on CNN that e-book publications exceed paper-based books in the US. Is the e-book industry in Japan still in it's early stages? If publication companies make all old books digital, I would be really happy, but is it impossible? I know there are companies who can make my paper-based books digital, but it costs money and I have so many books ... Anyway, I'm still scared to add new printed books to my book shelf, so I go to a library.