Many posts discuss the possibility of exchange earnings with selling Bitcoin (and buy later). Other posts discuss the Bitcoin exchange rate, it seems that many agree there is a strong upward tendency and the volatility is hard to predict. It seems dat selling Bitcoin results in a serious probability of an opportunity loss. Selling Bitcoin can only be motivated by an (partial) exit. Do you agree?
Not at all if you are selling at the correct upward movement time then their will always be chances of price going down and you can buy back them. But if you are not a trader then better to buy and fix the selling target and when you achieve it that time better to sell off.