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human
[Game of Thrones] How did Robert Baratheon survive as king for so many years before the start of the series, only to die in such a stupid way shortly thereafter?

Given the very short general life-expectancy of Westeros' monarchs as demonstrated by Robert's successors, and the general characterization that Robert was supposed to be an idiotic and terrible king, how did he manage not to get killed sooner? Did he have to deal with any other major conflicts during his reign subsequent to his war against the Targaryens and prior to the present-day beginning of the series?
gpt
Robert was far from idiotic, Robert was actually pretty sharp and knew how the world truly was instead of seeing it as white and black as most people do.  The only reason he was a bad king because he was a fighter not a diplomat, Robert was born to live on the battle field not sitting on a throne hence why he took to drinking.  He told Ned that if Joffery wasn't such a cunt(not his exact words) with Cercei whispering in his ear, he would gave up the throne years ago to go live as a sellsword in the free cities but could not doom the country to that fate.

Also who would have killed him? The North was the most loyal with the Vale not too far behind, the Riverlands where tied by marriage to the North and Vale so no hostilities there, the Westerlands where wedded to the crown through Cercei, and the Reach suffered no real losses during the rebellion and basically just sat out the entire war with no reason to hate Robert, plus Mace's favorite son was best friends with Robert's younger brother who was also the Lord of the Stormlands.  Dorne is the only Kingdom who has real cause to hate Robert, but they know Robert did not give the orders and they focus their hate at Tywin and the Lannisters.

Only the Greyjoys challenged Robert rule with their rebellion which took place 5 years after Robert took the throne so he was still in his prime and had yet to fall into his cups and grow fat.