To everyone with their different opinions and choice over things. USDC and USDT are both stable coins, maybe for one reason of the other, there's preference to these coins.
For me, I use USDT, as a stable coin for trading, and a place to hide in other to maintain the value of any coin I'm holding when there's a little deep or price correction. It also has more trading pairs in exchanges compared with USDC.
Also, I use USDT as a means of storage for my native fiat currency as it has effect when my native currency faces a declination in value.