> Who needs plumbing when you have a servant to bring you whatever you want?
I like hot showers. I bet you do, too. Besides, what do you think happens to kings when they get a toothache? No anesthetic, nothing to be done except an idiot with a pair of pliers and filthy hands. I doubt many kings had teeth after 35 or so.
> There’s a lot of stress to life unless you’re rich,
I'm afraid that's pretty presumptuous. The rich just have different problems.
> and you also don’t have very much control over things around you. A king has a significant amount of control by definition, and that probably contributes a lot to their quality of life.
When you're the king, everyone wants to kill you. Including your own brothers and sisters and kids. You have no friends. The losers in the game of thrones are always killed.