Speaking from a non-religious and cultural viewpoint here: I’m of the opinion that diversity is one of the things that makes us humans ourselves. Cultural differences and different languages could be a barrier (sometimes annoying), yes, but at the same time, I believe those things help establish our identities. (That’s why I think the best way to deal with these differences is to understand them and then accept that these differences exist, not force or pressure other peoples to adopt customs or ideas that were not theirs. Of course, in the long run, different cultures in contact with each other
will influence one another - that’s another fact we should accept: that no culture which comes into contact with another will remain ‘pristine’ forever - but IMHO that’s still a different thing from eradicating a preexisting culture and forcing a new one.)
If we stifle this diversity, I think the whole world would be a lot more boring place to live in. My idea of scary is totalitarianism and total conformity: that’s why I find the Smith clones in
The Matrix Reloaded or as the last poster said, Ingsoc from
Nineteen Eighty-Four really haunting. There’s this Japanese proverb that ‘A nail that sticks out gets hammered down’ (since the Japanese value
wa or harmony so much, individualism or being ‘different’ from the mainstream is not exactly encouraged - which is one of the interpretations of this proverb). I don’t want the ‘conform or die’ interpretation of the proverb to hold true for the whole world, no thank you.