If anyone believes this to be a dominant language of our world's future ..... you are crazy.
The world has been simplifying how everything is done, not complicating it.
Though I absolutely love the 2002 TV show Firefly, Chinese will not spread beyond its own borders.
It already has (Singapore).
Anyway, it isn't nearly as difficult as people make it out to be. Chinese is actually a very logical language that feels more natural than other languages. In English we have "be," while we also have "am," "is," and "are." In Chinese there is just "是." Makes more sense.