Exchange rates are relevant only to particular segments of national economy, namely, trade.

Here is another reason why this is not a big deal. Exchange rates are relevant only to particular segments of national economy, namely, trade. It is irrelevant to the national economy as a whole. When you do both importing and exporting, trades cancel out any positive or negative aspect of exchange rate. Cheaper yen is bad for import but good for export, and higher yen is bad for export but good for import. What's important is inflation rate, not exchange rate. Inflation is crucial because it affects what you can buy at home in everyday life. Luckily Japan's inflation rate is low at this moment, comparing to other developed nations. Inflation Rates: Japan: 0.9% UK: 6.2% Germany: 7.3% USA: 7.9% Spain: 9.8% Argentina: 52.3% While people in many other nations are losing buying power of their currencies everyday, people in Japan is enjoying stability of their currency. Japan is a better place to be in today.