In a world with so many diversities, we need a language to unite people. And as per now, English holds a crucial role to be a language that connect people accross the globe. People that born with their first language is not English are studying English to connect more with other people, and to strive to work in an international working environtment. The amount of many English speakers shows that English is a lingua franca (a language that use globally to help people communicate with each other).
But, even if there are many English speakers, the people who are not born with English as their mothertongue or a country that use English but with an enrichment from their cultures, may be confused when they are interacting with a native English sepaker.
This could happen because they share differents cultures, customs, and values. This what makes English speakers interesting. It is how they preserve their cultures in English that intrigued me, even if they are speaking English, they also brought up their cultures in it. This shows how much they love their roots.
The case like this can be seen from Singaporean English, the way Singaporean speak English maybe not differ at first with the native American. But, do you ever heard native American adds leh, lah, meh in the end of their speech? I never heard any. Well maybe meh has the same spelling from The American meh slang, but it's tottaly different!
A case like I mentioned above is an example to how various English is. I can totally agree that English is one, but the enrinchment from cultures, places, folklores, myths, dances, are what made English is plurals!