In 1995 I became a Italian Citezen. I was born in the US, but I took advantage of the "Right of Blood" provision of Italian law. Once I was able to document Grandparents and Great Grandparents birth, Italy considers me a born Italian not Naturalized. This avoids conflict with with my US Passport. The right extends to my wife also.
I can live in any EU Country I choose. My wife and I explored all of the likely places after I retired. It took a year for us to figure out we were Americans. While we met very nice people and were treated well, we realized that we were Americans and we took our American Passports out and came back.
I had real problems with the US after Nam, but we are essentially Yanks. Spain was very tempting, we will probably die here.
I thought leaving would be easy, but it was not. So we will live here on our own terms.