All coins were down the previous 48 hours due to the hackers able to stole millions of dollars worth of BTC and other coins. But there's no point of selling your crypto at these prices, wait for the market to go back up, don't turn your virtual loss into an actual loss.
But not all of us believe it will go back up right away. What if the price go down even further more? Maybe we can sell now then if it dips to 5K USD each then we can buy back more.
But no one can tell as well what will be the bottom price. Even if it hits 5K then you buy, it can still go down even further to say 4K or even 3K.