I will start hating altcoins only when bitcoin raise up to 20,000$ and altcoins fail to move up as well, many people are putting blames on altcoins today as if bitcoin is not in loss itself, the ATH of btc was 20k and now it's trading for 7,000+ thats like 12,000$ lost please how will this not affect other altcoins as well? Top altcoins will surely lose value as well, to me this present loss of altcoins are positive, look at coins like LTC, EOS, BNB, these coins are doing fine. You will only have problem if you invest in crap altcoins
It can also good for trading, not only for hold because it is depend on you if you want to hold it or add more because of the cheap price. There are good and bad side of altcoin so you must need to know before act like that.