I’d argue it’s useful for many people who live in countries that suffer from hyperinflation.
I feel like an asset that doesn't rise or fall by a factor of 10 a year would be a lot more useful for that purpose. Even bartering levis blue jeans would offer more price stability than btc.
Blue jeans aren’t very salable in the sense that you have to find a blue jeans buyer in order to exchange them for something else.
Likewise for bitcoin. In either case the levis conversion rate is pretty stable unlike bitcoin. You can go on marketplaces like poshmark and others and readily buy and sell these jeans at prices that are both stable and widely agreed upon.
You're not one of the "it's not useful to me, so it's not useful to anybody" people, are you?