It would be a terrible shame if Shakespeare and his works at some point came to be forgotten. But I do not believe that.
I am now listening to an audiobook about William Shakespeare called I believe William Shakespeare and how he became William Shakespeare. It is really a wonderful audiobook and fascinating, informative. It gives you a more intimate perspective into the man, the human being which he was, and some of the thing which might have driven him, the themes of which show up in his masterpieces.
There is another book about language. I cannot recall the name of it or the writer. I do not believe it is the Tower of Babel. But I will find it. The write-up sounded fascinating - one that McWhorter recommended.
I eventually got McWhorters Language Lectures on cd. They are well worth the viewing time and he is a great lecturer. Makes the history of language so come alive.
As long as there is written language, a language will not be forgotten or die out.
Why would you like language to die out?