I think the reason why people investing in Bitcoin is to earn profit where some are afraid that they will miss the chance to earn profit. You can say that it is very much like FUD or FOMO that they also want to invest. If they really want to invest then they should have bought Bitcoin when it didn't reach the price of bitcoin today.
Yes, the main reason why people continue to invest even in ATH is due to FOMO, and they also believe that the price would continue to increase.
But nobody knows how high it could reach and how the price would move, it could continue to go up or it could go down and have a price correction.
Anyone who invests in bitcoin is doing so for profit. I don't think I have specific data on investing; whenever money comes into my hands, I simply remove 30% of it and top up my investment to increase my profits when the bitcoin increases in profits. Op Anyone you ask why they invest in bitcoin will tell you profits because what is good in crypto anytime you invest money on it and buy coin when the coin you buy decrease and you lose if you didn't sell it and you leave it, the price will definitely raise again and you will get your capital back and profits is not like other investment that when you invest and you lose that is all they will run with your funds because is not real platform.