> At the same time, each language is a barrier between people, one that prevents ideas to be shared and stories to be told. The fewer such barriers we have, the easier it becomes to understand others. Literally.

I agree, the language barrier means a lot is lost. But at the same time each story and even way of thinking is flavored by the language it is expressed in. Certain things cannot be fully expressed in another language, the words don't hold the same charge and history.

If the entire world were to speak one language tomorrow and nothing else, there would be a great diminishment in the world's art, culture and mythos.

So it's not a black and white issue.