Everyone had an address, almost everyone had a phone, almost nobody had an email address. Not very useful.
How did you send pictures over email? I know what you are thinking, but no, you didn't take digital pictures. If you wanted to send one of your pictures over email, you needed to have an expensive scanner. And if you did, the pixel quality would be terrible. Not very useful.
Technologies like email need things around it to evolve, both technical and social. And the same is true for blockchain and cryptocurrencies.
I'm not claiming that either of them are guaranteed to be successful, but I'm claiming that a lot of arguments against it don't make much sense. Because those same arguments could just as easily be applied to email.