Stable currency is very important as a backup.  Always keep some stable currency in the wallet.  I recommend you to hold only BUSD and also usdt, they are very good coins among stablecoins.Stable currencies play a role in bear markets.  Usually traders invest all their currency, but later find that when the market goes down, they have no currency left to buy.So stablecoins are very important to cover losses in trading. I always secure assets in stablecoins,because I know it will come in handy in times of danger.