If you are able to rise above the more base reasons why many watch it, then good for you. But at least my perception from my limited viewing of some of it and moreso the reactions of various friends and family to it impress me that it is basically following a fancy version of the formula used by the "professional wrestling" programs. They have the "good" wrestlers and the "villain ones", and they generally introduce some new "villain" wrestler in a match where they openly cheat in front of the viewing audience to win matches. They do this for a while, ramping up the negative emotions of the fans, and then eventually give a payout match where the "good" wrestlers manage to outfox the latest attempt at cheating and win.
That pretty much sums up the formula Game of Thrones used for the Joffrey character. Deliberately make the most abhorrent little tyrant that people can imagine and the give the payout with the Purple Wedding. At least among those I observed, the reactions were not some high-minded philosophical musings, they were celebrating that someone that they had been conditioned to hate intensely had been killed slowly and painfully.
And this was addressed to another, but I'll toss in my two cents:
In the real world, pretty much every major attempt to create a utopian society has resulted in rigidly hierarchical militaristic society, because you cannot make people adhere to whatever the utopian vision is -- from Hitler's Third Reich to Stalin's Communist future -- without employing a massive use of force. As one meme so quaintly put it:
You seem to be assuming that peace can be achieved unilaterally. If someone is intent on either subjugating or simply killing you, your own peaceful intentions will not make their threat cease to exist. It was actually illustrated nicely in the prologue to this series -- the two most ardently pacifist characters were also among the first to die. It isn't because the peaceful folks were evil, it is because the Klingons intended to attack regardless what the Federation representatives said.
Actually, I see the opposite. My dad fought in WWII, and I agree with the common sentiment that in many ways they were the "greatest generation". Those young people sacrificed a great deal in order to help the rest of us be free of tyranny. My own father spent Christmas time during the Battle of the Bulge sleeping outside during one of the coldest winters in Belgium's recorded weather records, and saw friends and allies brutally killed by soldiers of one of the most evil regimes in history. He and others who voluntarily endured such hell didn't make our society like the vile dictatorship that they were fighting, they kept us free. People who do these things are not horrible blots on our society, they are our heroes.
In contrast, in today's society after many have been born and raised with no experience of what is at stake in a war, we have increasing numbers of people who believe that they have a "right to not be offended". I've seen a clip of a fringe British politician actually being arrested and handcuffed in modern England for simply reciting verbatim in public a quote by Sir Winston Churchill.
IMHO, the path to something like the Terran Empire doesn't lie in nationalism, military service, or right-wing politics, but rather in the collectivist belief that people who disagree with them are inherently evil and should be punished for it. Once people buy into the absurd notion that they have a "right to not be offended", then they empower the government to deprive others of one of their most basic rights in a civilized society. It is only when the government decides that the original complainants have also committed some sort of thought crime that some of them wake up to the grave that they've dug for themselves.