Earlier quoted context omitted.
http://en.wikipedia.org/wiki/Pinyin
That doesn't appear to be used for internal communication, but rather for communicating with foreigners. I'm sure many millions of young Chinese schoolchildren would love it if Pinyin was adopted as a native written language, so they wouldn't have to spend quite so much mental effort memorizing the tens of thousands of characters needed to qualify for a diploma. Same goes for Japanese schoolchildren, since they're pl…
The language IS evolving toward hiragana for simple, everyday words, but ask any adult who has to read children's books (all in hiragana) how painful it is to group the words correctly and you'll agree a bigger change won't come soon.