because majority of altcoins are terrible investments since they have no long term potential and they have always been losing value in long term. that means holding them is a guaranteed loss. in altcoin cases selling when you see a dump is the wise thing to do.
Actually it depends on the altcoin you are "holding" and "investing". There are some altcoin that has long term stability and it also depends on the use cases or benefits to someone holding it I guess. I respect your opinion, but I am holder of an altcoin specifically Binance coin. Ive dont see any reason I am gonna sit on a guaranteed loss well in fact, holding it gave me some beneficial gains you could get on bitcoin itself.
well, its your analysis and you should stick to it.
i have not yet seen any altcoin with
true long term potential yet. coins like BNB are too centralized for my taste and they are pumped mainly because of their centralized owner that has been performing well not because they are useful. the day the owner (ie. the Binance) stops being successful, the token also dumps hard. for example when Binance goes the same route as Bittrex, Poloniex, Cryptsy and MtGox their token drops to zero.
that is not something that i would want to be involved with in long run. which is why when i get involved with altcoins it is for short term and as a trade during their pumps and i sell before the dumps begin.