History is not always an indication of the future and while I agree it is likely that if we get an insane new ATH it will come back down, but taking profit in fiat when you have the most sound money ever is like taking profit in turkish lira when you have access to dollars. I simply use bitcoin as a savings account and keep what I need in dollars to pay bills. Trying to time markets is a fool's game unless you want to commit to it full time