Well, some people prefer it. Many countries have alternative systems that are more used than CCs, and which they consider superior. Having a single system that maintains those advantages but is usable worldwide would be nice.
Sure, local preferences and regulations do vary, and they matter. I'm sure a lot of countries are hesitant to use American CC networks too, given how American/everyone-else interactions sometimes go.
But, that doesn't really solve the problem, it merely pushes things around a bit. It's insufficient to say "credit cards aren't universally loved", because that does not imply that Bitcoin is the correct choice anywhere. It's perfectly possible that the local alternatives to CCs in other nations would still be preferred to Bitcoin. If one wants to sell the idea that BTC is a better choice than X, one must produce compelling reasons why this is so, preferably without relying on ideological statements that don't have universal appeal; I'm sure the goldbugs love BTCs anti-inflation nature, but that argument only carries the day with a very small group of people.
