As long as import and export of goods between two countries exists, the importer will engage their banks to handle payments due to exporter which is normally by way of sight Letter of Credit. Most of them tied up the contract and quoted the prices in USD or EURO. For this reason the paying bank has to buy USD or EURO before remitting payment to exporter. So demand for FOREX will be in no end position as long as there is economic activities being carried. We all knew that almost 90% of Forex turnover is handled by those big banks or through the Central bank of the respective countries.