BTC has been very useful for me a few times. I know it's not anonymous and it's an imperfect system (there's been a period when I was flaming about that in the interwebs most, before the darker times, before the "AI"), but sometimes you are in a sanctioned country and you need to transfer money to someone who isn't, or the other way around. I understand some people making laws want to consider this illegal and something else not illegal, all by their choice and vote. I could care less about their opinion.
Until it gains stability resembling actual currency, it will remain a niche bartering item. All crypto still behave way too much like stocks to be used as payment methods in general society.