Everyone in here is desperate to convince each other the Bitcoin can only go up and therefore you have to buy and hold.
But when you buy Bitcoin, someone is selling it to you.
Why are people selling Bitcoin?
The knowledgeable people are the ones who are now slowly selling out before the bubble bursts. When you are now buying more and more Bitcoin ("investing" as people in here call it) who do you think you are buying them from?
You are buying from the knowledgeable people who are slowly getting rid of their Bitcoin.
Some people are selling their bitcoin because maybe they are in need of money.It is better to sell bitcoin in a person than to sell it in an exchange in which will charge a high transaction fee. Everybody also cannot hold bitcoins so there should be a time somebody would sell their hold. All in all we cannot hold someone decision.