I have family in Taiwan, and their broker has been encouraging them this year to purchase US currency because it's the latest hot thing. In 2014 the exchange rate was 1USD:29TWD, 2 years later it had edged towards 1USD:34TWD, and looks today to have dropped back below 1USD:33TWD. 2014 would have been the time to exchange your TWD to USD, not right now as it's hitting historical highs. Of course the broker only gets paid while making trades, so why wouldn't their advice be buy, sell, buy, sell?