Tough call. We had a thread on this same topic maybe a couple of years ago, and the discussion got pretty intense.
For us, we could go to a number of countries, but equally, there are a number of countries where we wouldn't want to live, for a number of reasons. (I don't think that there is a single country in the world that we wouldn't want to at least visit, with the exception of North Korea.)
The things we would look at are basic freedoms (that rules out a number of dictatorships in addition to North Korea), security (that rules out a number of Latin American and African countries), basic services (medical and social services, electricity, heating - anything that requires a reasonably well functioning government - and that rules out a number of southern and eastern European countries as well as quite a few Asian countries), and in general a reasonably good standard of living (that rules out, for example, a number of the Pacific and Caribbean islands).
What's left? Around the Pacific: Australia, New Zealand, Japan and (with some doubts) Thailand. And in Europe, quite a number of countries: any of the Nordic countries, the UK (with the exception of London - too expensive!), Ireland, the Netherlands, Germany and Austria.
And in North America: either Canada or Texas. (Didn't we have a thread about five months ago, with someone from California asking how to behave when she goes to what was, for her, a foreign country - Texas?
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