You asked for practical uses and these were all practical uses for me and for many people.

Lack of regulation, your understanding of how NFTs work, how people in other countries with other regulations want to be paid, or whether you know about the shops that accept crypto, like newegg and shopify, have nothing to do with whether something is practical or not.

But from your last point, it doesn't seem like you care whether blockchain technology has built anything useful for people who aren't you, and it doesn't sound like you're engaging in good faith.

And, again, I am in no way endorsing or advocating for cryptocurrency. I got paid to do work for crypto people, so I learned about and spent cryptocurrency, practically.

Edit: I can't believe I forgot buying drugs. There is no better way to buy drugs on the darknet.