Bitcoin keep on falling down and no sign of raising. How long can we keep holding?
Till you can get profit, you will not loss your money if you don't sell your coin in lower price. A few years ago bitcoin price is only about $200 but in line of bitcoin adoption the price is now increase, just wait.
We will not loss our money if we dont sell it in low price and keep holding it.
Thats true but not all kind of altcoin you can threat the same thing since they all dont have same popularity and some of them can not survive longer. So for non popular coin, better we sell it soon before the price goes deeper again.