Adam Frost created a wonderful video, this video was originally created for the Cherasco conference and has now found a home on the SignWriting website as well.
Adam's presents a compelling case for being able to write in your native language. Adam's mother tongue is American Sign Language. SignWriting allows him to do this. Have a look and I am sure that you will agree with me that the point is well made.
The ability to write in a mother tongue has been proven to be of benefit for the whole of the academic career of a person. Even when the career perspectives are better in another language, this is however another issue :)