Yes, if you want to actually work with teams in the wilder world. English is the lingua franca of effectively all major programming languages. North American t

Yes, if you want to actually work with teams in the wilder world. English is the lingua franca of effectively all major programming languages. North American teams, EU teams, and Indian teams are all on English by default. I'm not totally sure how worthwhile supporting internationalisation really is. Localization is a bitch, and doing things in ISO formats as far as possible is best anyway.