saving fiat didnt give us return , and even its value will decrease due inflation. save our money into bank was not profitable at all , we only got benefit from its security and there is no risk in value volatility. cryptocurrency especially coins that have strong fundamental be good place to growth our money in long term as long as its free money and we have another saving to fill daily needs and urgent needs.
I don't recommend storing all assets in FIAT, but only some for backup if the market crashes. Saving in FIAT won't give you a good return, but it won't give you the downsides of a stablecoin either.
Don't invest all your assets in highly volatile crypto if you are really unsure.
There is always a reserve to deal with strategies that don't go according to plan and don't use everyday money for investment, use free money.