The question about English was just because many folks who only speak English don't realize how valuable it is (because they can speak it wherever they go), but

The question about English was just because many folks who only speak English don't realize how valuable it is (because they can speak it wherever they go), but also don't realize how other people cherish their own "niche" language. I gather you grew up with English and Welsh and hence have a different perspective. I agree that there's a mix of cause and effect in what I said. Language and culture are intertwined and I don't know how to describe them in a "systems" perspective (how one affects the other). It's just my experience that language has a lot of the culture embedded in it, and even if you didn't grow up in the culture you acquire some of its traits when you speak it. > But I don't believe in diversity as an end in itself; if there's some cultural practice that is simply bad and has better alternatives, I think it would be crazy to insist on preserving it just for the sake of it. Having multiple ways of looking at one situation is enriching by itself. This is because it's a case of not knowing what you don't know, so you a priori you should aim to maximize your exposure to different cultures. There are some exceptions (e.g. I don't think it's worth it to keep or spread the Spanish practice of bullfighting), but they make a small part of what the world's cultures can bring us.