This is a classic misconception that many newbies have, they expect the markets to always be in a bullish state and this is simply not possible, after all in order for the price of bitcoin to go up money is needed for this, and even if the world is now inundated by fiat money as governments have printed a lot of it during the last two years that money is not infinite.
As such there are limits to the speed and magnitude of any upward movement that we witness in this market, so the longer and the higher the bull market goes the the chances of seeing a bear market increases, and we need to be prepared when that happens or a great deal of what we got during that bull run will evaporate in a relatively short amount of time if we are not careful.
Unfortunately they are usually the people who came from the bubble during the peak times. They see everything going up all the time and then they think that they could keep making money like that. We all know that bull runs eventually end, and then they see bear run and they get scared and think that it is all over and they run away.
The reality is that bear runs are usually over as well, and that means we are going to see bull runs, and then we are going to see bear runs and that will be a cycle. So the newbies who see the bull run turn to bear, usually do not stay long enough to see bear run turn into bull, they just come in right at the middle of a bull run and do make some money but do not see that change.
Correct, the markets run on cycles, and this is something that can be easily be seen on the charts, however it is different to see something on a chart and a completely different thing to actually experiment those movements by ourselves.
This is why newbies fail at holding their coins even if they have the intention to hold their coins from the beginning, they see the movements of bitcoin on the charts and think that in the case of a bear market they will be able to hold their coins, but once they begin to lose money that is when doubts begin to take over them and then when the market suffers an important correction that is more than enough for them to sell their coins and most likely to never return to the market.