people wants to earn a huge amount of profit and because of that, bitcoins should increase even more in the future in order for people to get ROI in their investments.
If people wants to earn huge in such a volatile market then they should know when to take profits. The problem is that some are hoping for a continuous increase in price and when its price dump, that's the time they would panic. One should take profit when the market is still green. Well that's the nature of people sometimes because we are an emotional being so when there are panic sellers, we tend to panic too and sell. Just like what OP said, one should take profit from time to time so that we are sure that we can have ROI even if we hold the asset for long term.
It's important because it creates an atmosphere of continued growth and progress. It's also a sign of more positive returns. Though, it's not that predictable, we must learn to control our emotion and not to panic. It's good that we have an idea to what's the proper time to buy, hold, sell, or invest, and on what's the proper way to manage risks and losses.
That's good to have proper ways of managing risks, but how to do it when you encounter such great short comings in your lives. We need to be more focus on how to develop the self sustenance, even if bitcoin price fall down due to volatility factors that made the price unpredictable. Constant rise is very important instead of fluctuating market value, and because of that more bigger investors particularly the whales will take over so they'll be able to gain strong trust with bitcoin that will help the btc price became very profitable to invest with.