In case of crypto you can easily go to 0 or near 0. However gold is historically stable in terms of a real value.
Cryptocurrency is maturing, and that might mean we will see less volatility.
https://www.buybitcoinworldwide.com/volatility-index/
And gold has also fallen 40% from $1825 in Aug 2011 to $1061 in Nov 2015.
https://www.macrotrends.net/1333/historical-gold-prices-100-...