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If you have, or plan to have children, €90k in Luxembourg is probably worth at least $150 in the US.

Luxembourg is very expat friendly first destination in EU. You get much more than €87k if you move to Luxembourg and settle there.

Free high quality public primary schools. Before starting primary school at 6, children in Luxembourg attend early education and preschool. Ages 0-4: non-compulsory crèche, mini-crèche or childcare. Age 3: pre-primary education starts, but is not compulsory. Age 4–5: Children begin compulsory preschool at an elementary school.

Healthcare system on Luxembourg is top notch, maybe best in the Europe.

Company pensions to expat employees are very common, are you getting one? You become eligible other pensions only after 10 years of payments.