Switzerland. My family left in the 17th century to avoid religious persecution, but it is the perfect blend of everything I like - small villages, cosmopolitan cities, natural beauty. Where I live now gives me about the closest approximation that I could create in the US.
Once the kids are gone, we are likely to become nomadic.
You'll pay lower taxes than, say, in America. But it's expensive for many things and it can be hard to make friends. That said, it's a stunningly beautiful place to live.
Once the kids are gone, we are likely to become nomadic.