When you are deep deep in profit, like you bought at $250 or less, even a crash wouldn't be the end of the world.
The price is $18k, that is crazy!  I have taken profit but and still holding and hoping for more.

Tether looks dodgy as hell and might be the reason for the eventual popping of the bubble, but until then it is a lot of new money pumping Bitcoin to ever higher heights!

I don't feel too much like an idiot, I feel like I am already in profit, even if my remaining Bitcoin were worth zero.  I don't really need the extra cash for anything, so I am waiting to see where this crazy rise goes!