Many still like Tether no matter issues are being thrown on it. With the volume that it has, that only tells one thing and that means that it's being trusted by many. Or not being trusted but because of the volume, they choose to use it instead of any other stable coins.
Usdc, don't ask for reasons, I just do.
This is the other one that I use these days. I don't know why as well but maybe there's a magnet on it that makes me use it because I have always seen it being said by people.
most of people, just like me, want most convenient way to deal with storing asset which didn't fluctuate in value and USDT did just that with the fact that USDT is accepted in so many places.
kinda give assurance that my wealth is safe in this form of stablecoin.
of course diversifying portfolio is also good way, but sometime you know we're too lazy to deal with these diversification while also not adding some additional value towards our wealth that we just ignore it, considering the fact that USDT might be too big to fail but honestly seeing ftx and its stablecoin went to zero, i doubt the phrase, too big to fail is still relevant. but regardless its just most convenient.