What is the purpose of holding stable coin like USDT mate ? You can buy USDT and start trading with it to gain profit.
But you won't get anything from holding USDT in your wallet. Less volatile coin is not a stable coin.
Im usually using stable coin such USDT as my base trading pair on exchange.
There's no profit in stable coins. Some traders are using it to cut loss if the price is declining, then buying back once the market turns better.
We need to take risk in order to gain its part of investing. Bitcoin and other altcoins are high volatile and risky but its much better because of getting more profit.
In cryptocurrency we need to take risk to make money which is common thing about trading. Less volatile coins limit the loss, whereas the stablecoins make the holding asset values to be stable without much variation even when the cryptocurrency market is declining or increasing with time.
We can't predict which coin will be highly volatile and which coins are less volatile in the market, because in no time the price variation happens. With the market getting more maturity we'll get more less volatile coins