There is nothing like curling up with a good book and a coffee but for alot e-books and audio books are the way to go.
I know a couple of people who use audio books while travelling to and from work as they travel a distance everyday.
For those who may have reading difficulties, visual impairment this is certainly a benefit to them. Any sort of reading is great in my book (pardon the pun!!!!) I'm sure that as this grows in popularity so will the expanse of titles.
Cant say that I would use ebooks very much but certainly handy for those out of print books or books that you cant obtain from the local library.