Having lived in Berlin for ten years, I can say with certainty that wages there are less than half equivalents in our industry in the US, and income taxes are much higher. Cost of living in some places, like Berlin, is lower (for now), but that only matters if you intend to be a low income earner over your career. I would rather have 50% higher expenses and 100-300% higher income, myself.
There’s more to lifelong financial planning than “can I afford house payments?”.
There’s more to lifelong financial planning than “can I afford house payments?”.