The certainty of the value of legal currency provides a guarantee of value retention for stablecoin users. In this way, unfavorable market fluctuations will not rise, and will not cause loss of value.
There is no doubt that stablecoins are making waves in the ocean of cryptocurrencies. Binance's research supports this overall view, showing that the popularity of stablecoins and the use of trading pairs have increased in 2019. However, it is only a matter of time before using algorithmic coins to replace stablecoins backed by fiat currencies. Such algorithmic coins can better maintain purchasing power over a period of time.