The most recent report ranking country quality of life has US at #3

https://www.forbes.com/sites/laurabegleybloom/2024/09/10/new...

And the US is massive and diverse, with many states larger than those other countries. If you look at quality of life across US states, it’s likely the best states (think New Hampshire versus Mississippi) would outrank all those countries, since the average across all states ranked #3.