Stable presence is the best solution to make us not afraid of losing profits, and when the market is red then moving assets to stable coins is the best solution so that we can avoid big losses, because before there is stable coins I always move to strong coins like bitcoin or ethereum.
It can help only if you sell your non-stable coins to stablecoins before the market crashes, not after it crashes. So when the market is red, buying a stablecoin at the cost of bitcoin is a wrong move. Your two statements are contradicting, but I guess you understood the basic.
Some countries prohibit using cryptocurrencies to transact. It also includes stable coins. We need a stable coin when we want to return to investing after a positive trend returns to the market. With stable coins we will be easier to move funds. Because there is no need to deposit in the bank again to re-invest.
Stablecoins are cryptocurrencies, so if you country prohibits cryptocurrency then stablecoins are prohibited as well. Be careful of your local laws and invest according to them. You dont want to end up in trouble for petty reasons like these.
I personally don't hold stable coins for a long term. I prefer holding my coins instead.
I only use stable coins when I need to withdraw money into my bank account and that is when stable coins come into picture for me.
On few occasions though, I hold stable coins for 2-3 days when I am actively trading but otherwise no.
The use of the stablecoin therefore remains the same, to hedge against market volatility and not to use them as a store for value, for that bitcoin is much better suited. Stablecoins came in as a rising demand for stability in the midst of market volatility from mainstream markets. They should not be held for too long, some risks are always there.