Surely this is just a risk calculation, and depends on many factors.

Currently debt is cheap, so high risk, high return investments make some sense if the expectation is good.

Paying down debt if it is cheap is a silly mistake.

You can still make good returns on the stock market betting that the market is risk averse, we have feeble brains.

Currently the cash you have is probably denominated in a conventional currency which also carries risk, we just tend to assume our own currency is some sort of fix point.

I'll probably have had been buying bitcoins if my wealth was in Roubles, although the Rouble has rallied recently I believe, especially if I was dodgy character with difficulty finding a reliable bank in the West.

Deciding if I should buy BitCoins if I have cash in a reasonably stable currency is another question. Interesting question is when to start buying Roubles, you know eventually Putin will die, or the war will be over.