I need to be able to trade widgets for potatoes or socks, even if the farmer or seamstress don't need widgets. Money is the greatest force multiplier cuz it allows specialization.
Money is that which is "fungible, portable, durable, and divisible", as Mike Maloney has said, which is why he advises buying gold. I think BCH is better.
Ok I'll race you. Go buy a banana with BCH, I'll buy one with Japanese Yen - Winner is using the superior money(at least in the short term). I'll go when you say go.
Gold isn't portable or divisible. Dollars aren't especially durable and are becoming less fungible. I think portability and divisibility is more important. You can always convert out.