From Jay Walker’s talk: “English is the world’s second language. Your native language is your life, but with English you can be part of a wider conversation—a global conversation about global problems, like climate change or poverty, or hunger or disease. The world has other universal languages: mathematics is the language of science; music is the language of emotions. And now English is becoming the language of problem solving, not because America is pushing it, but because the world is pulling it. […] English represents hope for a better future, a future where the world has a common language to solve its common problems.”
English Mania is a good thing, so long as first languages are preserved and used.