Kiwix is mostly installed in schools, universities and libraries which can't afford a broadband Internet access. It's so much faster than the Internet and also can be used by many institutions to save bandwidth and reader's time. But many people use Kiwix for their own personal purpose. That's the case, for example, of persons suffering from censorship or prisoners.
Kiwix is really easy to use. It provides a range of features which make the usage comfortable: