Languages have been created/dying/evolving since when we started using them. Their death/creation/evolution fundamentally reflects changes in human lifestyle: i

Languages have been created/dying/evolving since when we started using them. Their death/creation/evolution fundamentally reflects changes in human lifestyle: isolation of populations leads to differences while intermixing means the creation of pidgin languages. The reason why there is a large amount of languages dying now is because of lifestyle changes of a large amount of people in recent times from living in small isolated communities to more regionally, sometimes even globally, connected communities. This includes people in the western world. Think of inventions like trains, cars, radios, TVs, internet, etc. that enabled such a change. However, that doesn't mean that languages themselves aren't a terribly interesting field of study and research. Archiving them before they die is very important for anthropologists, historians, etc. For example, they can answer questions about the history of other, still living, languages. They should at least be recorded. Of course, forbidding people from teaching a specific language to their children is different from this natural process and something really bad.