I don't know about other people, but I do trust USDT, because its equivalent to USD. And I mostly trade my margin trade with USDT. It's been few years I have been using without any trouble on few exchanges. So I think you can trust them. BTW, most of the exchange has USDT coin.
I respect your opinion which is each of us has different preferences.
But have research first before you will trust this stable coin, I have heard different shady activities about this USDT. I rather trust a stable coin on Binance because I know for sure it was backed up by Binance.
I used USDT but it doesn't trust them, I used it on exchange when I need to divert my asset when the price goes down but I didn't hold this coin for the long term, I quickly trade to bitcoin when seeing the market price goes up and that is the reason why USDT is on exchange. It needs a dollar value coin.