Is USDT still used?

I've been hearing quite a lot about cryptocurrencies, and USDT seems to be one of the popular ones. But lately, with all the fluctuations in the market, I'm wondering if USDT still holds its ground. Is it still widely used? Has its popularity waned? And more importantly, how stable is it compared to other cryptocurrencies? I'm considering investing in it, but I want to make sure it's a reliable option. Could you please shed some light on its current status and future prospects?