It is the Star Trek syndrome, the believe in the unity of life in the entire universe, all living, I suppose, in cosmic communism, sharing all the universe. Here is some speculation that we may be able to understand aliens due to some common features of language in the world. I suppose the idea behind this, is that we can then all form one multicultural comic society. But, as I see it, aliens might be more like those in the Predator movies, mighty unfriendly and not interested in such earthly foolishness. Who knows, maybe there is nothing out there at all.
https://www.wsj.com/articles/alien-languages-may-not-be-entirely-alien-to-us-11616817660