Altcoins are risky so many traders trade with trusted currencies like Bitcoin. Now those who are professional traders and can analyze well earn huge profits by trading in altcoins. As the risk is high in altcoins, but again in altcoins high profits can be expected. Bitcoin, on the other hand, has lower risk even though the potential for profit is lower. Now trading is risky, so I don't like to trade, although sometimes I trade with currencies like BTC and Ethereum. Now a few hours ago I heard the news of ByBit Exchange being hacked and don't like to trade for that too. But I have been using Kocoin Exchange for a long time.