When people have electronic cash on their device, they can, at least in theory, do things like pay $0.01 to bypass a paywall and read an article on a website they just found, without registering with the website or entering their credit card details, and without the website needing to have an account with the same trusted third party payment network as them.

This kind of seamless commercial interaction is made for the jurisdiction transcending internet age.

Also, I think the vast majority don't like the idea of internet commerce being controlled and gatekept by a handful of multinational corporations who run the proprietary payment networks, and decentralized digital currency offers a clear way to fix that.