Why not French?If you learn French, you can only talk to French people. The French don't make awesome curry.
Hinglish is spoken by one billion people. Many live in the States. They are cab drivers, waiters, silicon valley investors, motel owners. Want to get on their good side? A little Hinglish will do the trick.
Hinglish is also easy to pick up. If you know English, you know 70% Hinglish. A few more lessons and you won't be lying when you put bilingual on your resume.