What some people who don't see the need to preserve languages are missing is that each living language is in itself a Noah Ark that preserves lots of dead languages and world views. English preserves latin, greek, yiddish... Consider the word "consider". It comes from latin Considerare (cum + sidera) 'to consult the stars'. Each language that dies is a tragedy that kills many precedent languages. Moreover, current status is no guarantee for the future, even English could one day be at risk. I am a Catalan speaker, a language that once ruled the Mediterranean and now is struggling.