If Japanese people just used kana (like Korean people use hangul today), kids in Japan don't have to spend countless hours learning this complex (and often irrational) writing system. http://kanamozi.org/hikari959-04.html > If you really want to be native-level Japanese, kanji are essential There are visually impaired people who have difficulty learning kanji but speak Japanese fluently. Language is not just for peop…
Most written communication is typed. Which involves typing each word phonetically (and then picking the correct kanji from a list). This is orders of magnitude easier than writing a kanji by hand. You can get by without knowing stroke order or without knowing exactly how to write it. As long as you're even vaguely familiar with a kanji, you'll be able to pick the right one from the list.
Give this another generation or so, and I expect the coverage of those "777" will increase to ~100%, and the number of kana-only words will increase dramatically. National pride and linguists be damned, convenience always wins out in the end.