Does it really matter? I think the extreme amount of languages in the world right now is not helping us communicate. I don’t view language as a cultural heritage thing, just a communication protocol. And I have moved around a lot in the world, it’s very difficult to be constantly adapting to different languages. That causes a societal integration barrier for me.
I think if we had a universal language (note that it wouldn’t have to be English) we would be able to understand each other better and have less wars.
PS: I’m not advocating to ban languages or something, just to have a universal one. A bit like what Esperanto tried to achieve. Mutual language means more mutual understanding and thus less “us vs them” underbelly feelings that the fascists thrive on.
Languages have their own quirks and characters, representative of the people’s cultural values and history, and express ideas not even present in other cultures. As many languages have to be preserved as possible for these reasons.