False Security of English Speakers

Many English speakers have a false sense of security because English is studied and spoken by so many people around the world. Why is the sense of security that English speakers have a false one? Conduct research on global language statistics and projected trends related to language acquisition and usage. Post a link to your source(s), write 2 paragraphs describing why English-only speakers would benefit from learning another language, and hypothesize on which language might be the most beneficial.