Also you don't want to hold dollars because unlike bitcoin they're inflationary and decrease in value over time - a necessary attribute for something to work well as a currency and one reason among many why cryto thus far is a failure as a currency.

Crypto is closest to gold in that both are scarce commodities used as a store of value. It's a terrible investment though. Warren Buffett made an interesting comparison between all the gold mined in history vs all the farmland in the US and which is a better investment over time.