As a taxpayer in Japan, I want the government to stop worrying about this inefficient calendar system and fully adopt the Western calendar everywhere.
That said, I read the people's justifications are similar to those who favor the Fahrenheit system in the US. They say the scale is close to their everyday feel (under the current system, each era is roughly equivalent to one's lifespan) than 4-digit numbers, and therefore more "human". Their emotional attachment defies rationality.