Migration involves loss. Even when you’re privileged, as I am, and move of your own free will, as I did, you feel it. Migrants, almost by definition, move with the future in mind. But their journeys inevitably involve excising part of their past. It’s not workers who emigrate but people. And whenever they move they leave part of themselves behind.
Migration is a good thing, so long as it is voluntary. I believe in the free movement of people. But that’s not to say it doesn’t have a price. I have choices that most of the world’s migrants don’t have. I can go back. And I’m happy where I am.