While it would certainly be convenient if everybody spoke the same language, I don’t think it would be better than the current state of affairs, where most peop

While it would certainly be convenient if everybody spoke the same language, I don’t think it would be better than the current state of affairs, where most people know two to three languages more-or-less well. After all, knowing more than one language does give you some different insights, not just into the culture of the other language but also into your own culture. Furthermore, there is a whole canon of classical works in basically every language which would likely lose some of its value if it were only accessible in the translated form. We can add to the last point by taking note that English is a particularly bad example of a ‘world-wide native language’. While its simplicity – both with regards to its vocabulary and its grammar – certainly helps when it is the second language of someone, such concerns are of smaller importance when you want it to be everyone’s first language: Such a language can come with a much stronger set of grammatical rules and nicer ways to build composite words and still be (roughly) equally accessible to its native speakers.