Having stable coins is not stability, imo. Their value is pegged to the value of a fiat currency and, especially in times like these, one can't certainly expect a sustainable purchasing power of fiat currencies. And, in fact, unlike Bitcoin, stable coins can only lose their real value with time. So, if by "stability" we mean constant losing of real value, then stable coins are stable in that sense. But who wants that stability?
People who do not know what else to do, pick stablecoins because they believe that they could end up making a bit of profit with it. First of all, even if you are from the USA, you could use stuff like USDT to make sure you are in liquidity providing, interests, staking and whatever else you want to find and that's how you make a big profit.However, if you are not from the US, then you could be doing even better because not only you will profit that way, but you will profit because USD would go up against your own nation currency as well. I have been doing it, and I know the returns are little, but it is certainly a way to make profit and I am quite happy about it.
I congratulate you on making profits with investing in USDT, but how it's different from simply investing in USD then?
~ We were used to the "Gold Standard" in the past, and it worked out pretty well. But Bitcoin is even better than Gold, so it's likely the world will switch to the "Bitcoin Standard" with decaying Fiat currencies. Nothing is set in stone, so we can only hope for the best. Just my thoughts 
It may be hard to understand for most people in the world at the moment, but these days Bitcoin indeed is better than gold. There's nothing wrong with gold itself, it will always be worth something, but today it's overpriced big time, same as it was 10 years ago. Bitcoin, on the other hand, is now fluctuating around its new bottom.