If that were to happen, it would only become more valuable and in higher demand. As long as a single node remains active somewhere on the planet, Bitcoin will survive; indeed, projects already exist that use self-sufficient energy to keep nodes and miners running uninterrupted.

flat24

Yeah. The thing that could kill it would be an evil government banning it. Now that it's become planetary, it would require literally every country on the planet banning it at the same time.