Well considering the rate at which fiat and paper currencies are disappointing, bitcoin seems a good option, but even bitcoin is affected by price volatility, it would be a perfect fit if it is a stable coin, my opinion though
Governments all around the globe are currently trying to develop their own national digital currency and I guess in the future we will be transacting with these currencies wherever we go. Consider the case of China, in China most of the payments are processed by its own payment processors and mostly the Chinese people use digital methods of payment, they don't even have to type in the password for doing payments, their facial recognition software does its job perfectly. The future will definitely be governed by the digital currencies and bitcoin will also be one of those currencies.