that's what bitcoin is for. A cold wallet, encrypted and backed up in multiple places would solve that problem.
For example, the closing price exactly one year ago today was $880. Yesterday it was $248. So if you had $20,000 in savings and put them into Bitcoin, you'd have $5,636 now. What a wonderful savings account a 75% loss...
I swear the only reason people keep suggesting Bitcoin as an "investment" is because it is a pyramid scheme and they themselves are already deeply in the red, and see bringing in others as their only saviour.