EUR/USD is one of the most tradable pairs in the forex market. More than 80% of the traders trade EUR/USD. Pairs like GBP/CHF, USD/JPY, USD/CHF, and other major pairs are also highly liquid.
It is always better to choose a currency pair with maximum liquidity and minimum volatility. EUR/USD meets the above criteria, plus this currency pair includes the currencies of two of the biggest world economies, the US and European Union. Other currency pairs that traders can choose include USD/JPY, GBP/USD, AUD/USD, and USD/CHF.