Why would someone buy USDT?

I'm curious, why would someone choose to buy USDT? It seems like there are plenty of other cryptocurrencies available. Is it because of its stability? Or is it because it's backed by the US dollar, giving it a sort of 'safety net'? I understand that it's popular among traders looking for a less volatile option, but are there other benefits that make it a more attractive choice? I'm just trying to wrap my head around the reasons why someone would prefer USDT over other cryptocurrencies. Could you please elaborate?