I am fascinated (and tempted) by the kindle and its friends, and maybe one day I'll succumb (if I can afford one). But as a writer, I feel very ambivalent about e-books. When I've written a book, one of the great pleasures for me is being able to stand back and look at it, or just hold it, handle it, feel its realness. I suppose it's a bit like doing a painting or making a sculpture (I'd be useless at either of these, so I can only guess), or even having a baby. It's the feeling of having created something which stands on its own; something apart from me. Something physical. It's not a pride thing; more a creative-satisfaction thing.
So while I'd be pleased if anyone wanted my books as e-books, it wouldn't be the same. And if my books could only be published as e-books, I'm not sure I'd feel the same about writing them.