A technology is in the end measured by its real world applications and value. When all is said and done you have to close the study books and go out there into the world and make something happen. Whether that is provide the thirsting junkies with their fix or growing legs on sub saharan amputee babies, all the rest is pseudo intellectual wankery or hobbyism.

Now as far as crypto goes, one of the use cases it actually succeeded at is providing those who want to buy goods deemed illegal by whatever collection of mediocre numbskulls is ruling them with an avenue to do so, at a significantly lower risk than before. World hunger is still there, and the unwashed masses still haven't been provided with soap yet, but that's ok. We will get to that too, using blockchain, maybe. Or probably not.