Stable coins are needed to ensure that at the time of a strong fall in the market does not go into minus, well, for transactions.
You're right. Even in stable coins it is very convenient to experience such "dark times", it would be more accurate to say "red times" in the market as it is now. You can always go into stable coins and thus fix your profits.
no doubt such coins are very necessary, and even in the low market to buy for the growth prospects of other coins are not for cash, it is very convenient ,
Of course, its better, you dont spend your money and then you just wait for growth, although this process is not fast, but its still better than nothing.