Its like a stock market crash, one day everything is fine, the next its the beginning of the great depression. Welcome to the world of speculation, I hope you enjoy your stay in the house of cards.
The "only" thing left? Housing/land has long been the most durable store of value in history and that wont change. It's not as liquid as Crypto and requires laws to enforce private property. But if society collapses, we'll have bigger things to worry about and even Bitcoin can be "seized" via violence/coercion.