Until Cryptos adopt ties to the production tangible goods and services there is a serious problem. The backbone of cryptos ultimately destroys resources. Maybe even in massive amounts across the globe. In a situation where no energy is available the Crypto fail. A gold coin might save your life after and emp you cryptos might have value after the lights are turned back on.
Do not leave your wealth in Crypto currency but leverage it to acquire hard assets. Diversify and own all asset classes, including cryptos and rebalance as bubbles rise and fall.
Be safe and prosper