No, no, I hear what you're saying. And that's why I regard Canada as very similar...a previous entity of the British crown that now takes in people from all over the world...What does the inscription on the Peace Arch at Blaine WA/Surrey BC say? "Children of a Common Mother."
That being said, a lot of people still view their place of birth as home. My father wanted to live out his last years and be put into the ground in Italy. It didn't happen as planned. He never made it back.
And then you know what happens when they do get back to the motherland? They experience huge cognitive dissonance. For my father, it was "sheez, these damn Italians are bureaucratic pompous messes" counterbalanced by "sheez, the people here are REAL...I can relate to them." When in America, it was "well everything runs well here and is so organized," but "damn, '(Nordic/Aryan)' types are so sterile," so they mostly associated with other "high-drama" immigrants, unless they knew the parents of other nationalities via us kids in school.
Let the successful architect go back to Cuba. He'll be doing "Toronto-Havana-Toronto" on the plane a lot.
Not being immigrants, I don't think we can fully relate. However, if I don't like a country, I don't go there. And if I like it enough to go there, I try to immerse myself in their ways. It's funny how easily I've made friends, or just found people who have treated me extremely well, in the places I've enjoyed traveling to.