Yes, I agree. If the internet is already gone, the bitcoin will also be gone. It sounds funny, but that's a possible reason. There are so many possible reason why bitcoin could be gone. It could be the lose of the electricity, lose of the internet, bitcoin banned, bitcoin price decreases, or people doesn't use it anymore. It's very possible that bitcoin will be gone because of this possible reasons. But I hope, bitcoin will still exist in the future because this can help a lot of people.