High taxes, high socialism, is always considered a positive in these leftist created lists. Japan will tax you up to 50% of your world-wide stock gains and income. Most Japanese have no interest in speaking English, and you better love living around millions of very old Japanese that don't love you.
Life is short, so go where you are wanted. You can tell where you belong by how the locals treat you. But the number one rule is: avoid proximity to psychopaths.
And none are in Germany itself. How come?