Sell all and buy Bitcoin or keep it?

Hi there. I have a fairly diversified portfolio, but the idea of selling everything and buying only Bitcoin keeps catching my eye. Obviously, I check in on how it's doing, but I don't worry if it suddenly drops 20% because it's for my retirement. What do you think? Do you believe Bitcoin could be worth $200k or more in 10 years, or is that just a bit of a fantasy among "crypto bros"? I’m open to any recommendations. Thanks a lot for your help.