In my opinion, physical books cannot match with any type of book format. The touch and feel of the book interest me more. And I just love to keep my books neatly arranged on my bookshelf.
A lot of people are going to disagree but it's the digital age. Eventually, one day physical books are going to become obsolete whether you like it or not.
I wouldn't mind both. Now it's more convenient to read books, with most of the titles available, online. The thrill of reading hardbacks can never be compared to online reading though. Sadly, most of the libraries look deserted as more and more people prefer to read books or whatever that interests them online.
I think most people prefer the actual book in hand. The smell of a book is something you can't get from reading on a tablet, e-reader, your phone, etc. However, my Kindle allows me to bring a bunch of books with me while I travel somewhere.