You mean like the global reserve we have now? Most dollars live their whole life digitally.
I'm pretty sure the world would accept a version of Bitcoin which was a digital dollar used by mobiles etc for payments yeah absolutely and I'm pretty awake.
No one said bitcoin would die, I'm saying its can be bypassed very easily and potentially made illegal.
Are you talking about the world or the US, because I just lost you there. The world doesn't accept dollar in the way that you can just march into a store somewhere in Germany with a bunch of greens. You won't see global currency in the form of electronic dollar or Bitcoin any time soon. Same thing with a ban, even if one country decides to go for it the world won't follow, because the world doesn't see Bitcoin as a thread, but rather a game changing technology. Look how for example cannabis is treated around the world. In some countries you can go to jail for smoking and in other you can do it in public. Same thing with Bitcoin, it's completely legal, but I doubt it would be possible to make it completely illegal.