[tbbfjotllf]

> "the rest of the planet" doesnt accept visa/Mastercard just anywhere

India does have the infrastructure and accepts credit cards but it's not available everywhere and UPI is more widespread in India. It can be found in street side sellers to massive retail stores. While the street side sellers won't have the methods to accept credit cards, massive stores probably will and there are always ATMs so cash is a thing. For travel we have Uber, and Uber accepts credit cards. so, You don't need UPI but it's a great convenience to have. On the other hand, Not having Internet access after you get out of the airport is definitely a problem.