Same people sell a lot during bear run, whereas you should have cashed out at the bull run to take profit, and during the bear run when its low like this, you should go out shopping. Its low right now, and everything is looking delicious to me, I am running out of money from buying all these amazing coins and tokens, because I know they are at the bottom.
Have cash after you profit a good sum, but do not have any cash during bear run and buy it all.
Everything should be place in equilibrium. It is wise to buy altcoins when the price is at the bottom but it is unwise if it leads you to the point that you are running out of money. Since when an event comes where you need cash such as emergency, you will forced to sell your holding even though it is far from maturing( target selling price). Balance should be observed in both bear and bull market so that we can freely sustain our daily livings and plans.
Of course, you have to balance everything it, have crypto and at the same time you need the old fiat in your wallet. First, you can't transact everything in crypto, majority is still in fiat system, so you need cash on hand every time. Second, if you put everything in crypto, at some point, you will have to withdraw it. Third, have some in case the price crash hard again and so you have money to buy and then simply hold. Or if you think you make enough profits already, then sell. And so as much as we love our bitcoin and altcoin, the world still revolves around fiat like USD and our local currency.