>>216
>everytime Westerner has Internet ?
I assume you mean "does every Westerner have internet?" In first-world Western countries like the United States, Britain, Germany, etc? Absolutely, most people have an internet connection.

>in my opinion paper book is more useful than digital book.
That's debatable, if you carry and e-reader then you can carry hundreds of digital books around on you wherever you go, but you couldn't carry hundreds of paper books.
The only upside paper books have is that they don't run on batteries, so they can't die on you like an e-reader can.
However, most modern e-readers have rather long battery lives, some of them can even go two and a half days of constant use before having to be be recharged.

Personally, I prefer paper books, but that doesn't mean everybody else does.