There are so many people during bull runs that run out of cash because they like to buy all they could buy to ride the wave, which results with them losing a lot of money when the crash finally starts, it could go up a lot, and I mean A LOT, but eventually it will go down, so having a little bit of your profit cashed out could benefit you.
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.
They are newbies who don't know how crypto market runs, when ever a bull market is alive its not the time to start buying unless you are investing on a new project that just launched and you are one of the few that get into the project very early, also it's wise to take profits as more people gets in..
A bear market is for buying and holding, A bull market is for selling and taking profits, if this doesn't sink into anyone's brains they will be doing everything wrong.