Why bother to teach indigenous languages?

Answer 1

... to keep the culture alive and well through many more generations.

Read these very carefully:

Endangered Languages | Linguistic Society of America
http://www.linguisticsociety.org/content/endangered-languages
The Consequences of Language Loss. Sociolinguists and anthropological linguists are only now beginning to understand the effects of language loss or shift on ...

What Happens When a Language Dies? -
National Geographic
http://news.nationalgeographic.com/news/.../090226--dying-languages-india-missions.html
Feb 26, 2009 - ON TV:The Linguists, about endangered languages around the globe, airs in the United States on ... The effects could be culturally devastating.

Endangered language - Wikipedia
http://en.wikipedia.org/wiki/Endangered_language
Jump to Effects on languages - During language loss — sometimes referred to as obsolescence in the linguistic literature — the language that is ...

Answer 2

because we're different in this world