Ebooks have many advantages - publishers don't have to make guesses about how many books to print, books need never go "out of print", and hard-to-find books can be easily available. So far, the only limitation seems to be finding a way for the writer to be paid.
I don't think the physical object of a book has any sacred quality, so in principle I think ebooks are great - just another way for stories and story-tellers to connect.
A big book is a hard thing to manage - I find the computer makes it easier to keep it in order, and to keep the old drafts (which I sometimes go back to) without drowning in paper.