2. You're talking about people who immigrate to an English speaking country, correct? Good advice for people living in Mongolia surely is available in Mongolian.
Mongolians today learn English, at least the guy who went to Sweden to work as a chef that I talked to a couple of years ago did.
All of their parents sent them to English schools, and all business is done in English. You use the native language to talk to old or poor people, but nothing that can make you a living.
So in my experience, all that time I spent learning that native language more than what I needed to for casual conversation was a waste of time.
Your comment is the less human thing I have read in a while, and I spend a huge amount of time reading generated code!
I'm not blaming my elders or anything, I'm sure they were most well intentioned and they don't know the future, but I think my time could have been better spent. And I know there's many things I've wasted my time on, but I am simply stating my belief the future utility of some languages is not worth the cost of keeping them alive.
A language is a tool, but it is also much more. In particular, it is much more than a tool to make money.
I don't know you, maybe you are a wonderful person. Maybe you could have done better things with your time than learning that language (I do not know how much time you invested or your possibilities to use it), but reading your comment made me feel bad.
I didn't mean to imply that language is only worthwhile if you make money from it. But time is a finite resource, and unless you really like learning different alphabets or something, there is no utility gained for 99.9% of people in learning one that no one else is going to use.
Learning how to speak a language is orders less time intensive than a reading and writing an alphabet. I'm glad I speak it fluently, and can converse with elders and poor people. But reading and writing it will never come into use for me.