Crypto currency is a personal race. You trading your coin doesn't make you smarter than d dude who want to hold for long term. Not everyone has the strength to face computer to read ta, ama, bollingr etc. . Let those who bought at 19k atleast have some peace. Is upto them to know when to sale or hold.
Yeah your right about that selling or trading your coin cannot make you wiser, but even a holder doesnt considered as a wiser one, because most of them also has a weak hand when it comes in massive drops, panic always exist mostly in newbies, including those who bought bitcoin at 19k i am sure that they are all sell their bitcoin and switch to another or maybe theyre quit. The only one can survive in this situations is those investors who can sustain the risk and make a trade everyday, like me i dont want to lose anything without fighting.