highly useful at bare minimum,
can't get tricked with twisted interpretations so easily and the flavour of a multi-dimentional word opens up rather than one side often morphed into a different or wrong context at the time of reading.
Just as english is currently useful for computer users or lawyers no matter where in the world, and Mandarin for business interested, Arabic it appears is about to flourish as the source language of universal law.
Arabic also changes method of thinking and perception due to the constant exposure to interpreting roots expanding them, it forces a person to think and see issues in simplistic and complicated terms all at the same time.
there's always a reason with Allah, there's great wisdom in the fact He chose and evolved Arabic from the semitic family as the language for the Arabs amongst whom He'd send His final Messenger and Law.
Do a search for the book "aziz al mubtadi" and you'll get a gist of what i'm getting at.
here's a more detailed book: