Syria is the prime example of this. A major reason for the civilian slaughter was foreign intervention trying regime change.
It's a macabre study. But one could honestly argue that several countries in the latter category's populations are better off than North Korea's.
But I'd also point out that a lot of what makes it really suck to live in the worst places in the world isn't often the government but rather the international relationships. Turkey has a particularly brutal government, but it's Nato and EU ally status means that the civilians enjoy modern trade and travel.
The worst times to be in NK was the 90s when there was an ongoing famine and the US refused to lift sanctions thinking it'd spark a civil war that overthrew the regime. It didn't.
Are you sure about this part?
War isn't glamorous. It's mechanized death and torture destroying communities, families, and loved ones. And when it's powered by foreign governments, it's worse. Because the two colliding sides are armed to the gills with the best weapons in murder along with mercenaries and no oversight.
Living in a dictatorship is hard but doable, There are literally generations of people that have survived and thrived in that sort of an environment. It's not preferable, for sure, but you still have your family, friends, and neighbors. None of them are trying to actively kill you. So long as you follow the rules, life in a dictatorship is generally predicable and the odds of the state making you specifically an example are low.
If you're trying to say that had NK not had nukes we would bomb it for 'humanitarian purposes' or 'on behalf of its people' then I have a couple of bridges for sale.
You think the US would just leave them alone as a communist, sovereign country without nukes, bordering china???