Here are some reasons why speaking English is a really great idea:

The language of sports:
English is the language of sports, with many international sporting events using English as their official language.

The language of social media:
English is the language of social media, with many social media platforms using English as their primary language.

The language of advertising:
English is the language of advertising, with many international advertising campaigns using English as their primary language.

The language of fashion:
English is the language of fashion, with many fashion designers and brands using English names and terminology.

The language of art:
English is the language of art, with many art galleries and museums around the world using English as their primary language.