I need to buy a service. The service is provided in the US, where it is a grey area service. The service provider is not trustworthy enough to give it my credit card, and it doesn't accept neither paypal nor stripe. Unsurprisingly, it accepts bitcoins.

The way bitcoin exists, the provider accepts bitcoin; it doesn't accept other crypto. I would rather bitcoin, or something equivalent to exist than not.

There is also the case of people who hold value in bitcoin because it is more stable than their banks; go figure. This was the case in Argentina and Venezuela. That was also a gray area, but I think it would morally acceptable to do that even if it was prohibited