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.
People have many reasons to sell their bitcoin mostly they sell their bitcoin for earn profit . it's depends on you why you purchased bitcoin if for investment than you should hold it and wait for increases prices. People sell their bitcoin in high prices and if the prices is down again they can buy another bitcoin and they keep it and wait for increase prices. This is way to sell and earn money, its like a business for users.