To all this I say: "Vive la difference"! I think we should embrace diversity and try to learn from it not use it to say :"my way is better than your way, my country is better than your country, my language is better than your language, my god is better than your god..."
And as for language in particular, it is a living, evolving thing. None of us speak like our ancestors even if they lived in our own country.
changeling :)