Yes, much of the world is bilingual -- their non-English, native tongue, and... ENGLISH. English is the unifying language; the language of air traffic control; the language of the United Nations; the language of the Internet and programming languages -- it's the language of technology. It's not arrogance to say that it's the language that the remaining and dwindling numbers of non-speakers want to learn. Until some unforeseen hiccup happens, English is the language of the future of planet Earth.
Admittedly, I DO speak some Spanish, along with some Russian and Japanese. But, as technology progresses, as the rest of the world learns English, I grow less and less interested in learning any other language. What's the use?