Like for example You have make a researches and in your perception the price of Bitcoin will fell down badly like what happen last march. don't you think you will not Sell to buy again in deep?
If someone sell his coin by proper technical analysis before the price goes down and buy again when it reach deep is not a panic seller. And if I get the opportunity I will do it too. But if anyone don't have idea about the price analysis and sell his coin with panic, won't going to buy while the price will reach deep. Without observing the price always I prefer to hold with hope.