If the world standardized on English, it would help improve global efficiency and communication. As it is, English is the lingua franca of business and software

If the world standardized on English, it would help improve global efficiency and communication. As it is, English is the lingua franca of business and software. However a large part of culture is language, and countries are always trying to maintain their own. We're also all pretty biased since this discussion occurs in an English-based community. If Chinese were to become the dominant world language, I bet there would be more resistance. The imperial system is a prime example where Americans are a stubborn cultural holdout. Another concern is that language helps shape one's beliefs. Multilinguals understand that there are certain cultural concepts in native languages that are difficult to translate. Likewise, being a single language developer--whether it's Javascript or Lisp--influences how a developer approaches problems.