A virtual resource controlled by a government that's supposed to support exchange of goods ans makes it convenient.

I'd argue that no backing and ability to control its value is an advantage over representative currency. As long as government is working in the interest of the people of course.

We should just remember that digits with arbitrary value that nowadays don't even have to be printed are not a material resource. Having money doesn't secure anything, its volatile yet effective value emerges from the possibility to exchange it for material resources in given moment.