Imagine you live in a society where on your 18th birthday, you (and everyone else) are forced to choose between staying forever in the country where you are from or leaving forever, never to come back to your country. If you choose the leaving forever option, you can live, visit, and travel wherever you want in any and every country except the country you are from. What would you choose? Why? Would it be a hard choice for you? What would you give up? What would you be gaining?