Edit: the formatting on this is just atrocious, and I don’t have time to do more than take a quick shot at hopefully fixing it, but suspect it isn’t gonna work. Apologies in advance.
Just off the top of my head, I guess my short list would look something like this. I grant some, maybe all, of these have drawbacks, but these are the factors that I personally value and what I would miss by moving to any of the other places I’ve visited or of which I’m aware that seem like delightful places to live.
1. The sheer number of incredibly unique large cities (and the correlating lack of a single city that dominates national culture)
2. The ethos of individualism
3. The national park system
4. The sheer amount of diversity (racial, ethnic, national origin, religious, regional, etc.)
5. My personal access to, and quality of, healthcare (I grant that this is highly, highly subjective)
6. Other Americans (believe it or not lol)
7. Higher educational system
8. Economic dynamism and opportunity
9. Our foundational documents and subsequent amendments/improvements thereto
10. Our national tendency to do the right thing (after, of course, exhausting all other courses of action)
11. Approximately 10 trillion different regional cuisines (have you seen the number of strongly held opinions about different ways to smoke and serve meat?)
12. Every type of natural beauty imaginable
Not saying we have a monopoly on any of these! But I like where I live and think it’s a pretty cool place.