You do realize, for about a thousand years, Popes really were kings? They had temporal power in addition to spiritual power. It’s only been in the last 150 years, with the creation of the State of Italy, that the Papal States have disappeared from the map. Vatican City, as a nation, is less than 100 years old. The Pope is the ruler of both the Holy See and Vatican City, although Bertello is president. But if you look at the last, say, fifty years, you’ll see that the Pope has continued to shed those trappings of temporal power-- for example, the papal tiara hasn’t been worn at a papal coronation since Paul VI in 1963. John Paul I, in August of 1978, was the first pope in memory to turn down a coronation, in favor of an inauguration. But even Paul VI had donated his own papal tiara to the Basilica in Washington, DC; abolished the Palatine Guard; abolished the Noble Guard; and discontinued the stuff with the Roman Nobility at the Papal Court.
So, for a millennium, the Pope were both civil and religious leaders. The momentum for disassembling that has been solidly in place during my lifetime… there’s not a whole lot of people nowadays who have living memory of a time when the Pope had an active court.
But before the Papal states came about— what about then?
How many popes during the first five or six or seven hundred years of Christianity died as martyrs? It was a lot. They certainly weren’t being carried around and honored. They didn’t stop dying for their faith, even after Christianity ceased to be illegal. So making the jump from being persecuted for love of Christ, to being the ruler of a territory—
I don’t disagree that with time, though, the tangibles became more important to some men than the spiritual. But I also recognize that not everyone lives in my time of history, in my geographic location, and in my culture. However, I also recognize that concepts like egalitarianism-- the idea that all people are created equal-- upon which so much else hinges were impossible in the pagan world. So, my culture as it currently stands could never have come about without the context of Christianity.