Excellent article.  Every choice made necessarily precludes other choices foregone.  Language, cultures and traditions are not holy relics to be preserved at all cost.  They all have expiry dates, and propping up those headed for a natural extinction is irrational.  Traditions arise in the context of the culture in which they were developed, and may have little relevance in other cultures (and may, in fact, be disruptive if they run counter to the mores of other cultures).  While it is not necessary to give up old languages, cultures and traditions just because one chooses to live in another culture, bemoaning their loss where they have ceased to be useful is a hollow and counterproductive exercise.