Worth noting the US does not have a single city in the top 20 worlds most livable. Honolulu is #25, Atlanta gets #35
That tells you something.
Never mind this has been around for decades.
It actually makes perfect sense. In every metric that impacts a persons everyday life the us is almost always dead last among OECD countries. So of course the cites are too.
And there's nothing wrong with that.
Its more likely that they simply value all the convenience they listed over having their own backyard, larger living space, living in a quiet safe neighborhood for kids to run around in, and being surrounded by nature.