Worldwide, especially in my place, must sell it for profit rather than always keep it!
The government always forbids the use and play bitcoin so that it can not grow fully potential in my place. Surely it remains an advantage if there is a transaction rotation for bitcoin in my country to live.
In my own opinion, people sell bitcoins because they have enough bitcoin to sell and I think the value of bitcoin is high so that they sell it. I also think that they sell bitcoin because they need money to spend because they have something to buy. I think some people don't want to hold their bitcoin so that they sell it in a good price.
If we will generalize on what is really happening in the market then we will realize that they are just selling their bitcoins because they want to get out from bitcoin because of the volatile market and it resulted for them to sell their bitcoin even the price is not that high for most of the people. We cannot blame them and just do our thing because at the end, they will get into bitcoin again and regret their decisions.