I am not aware that anything in the history of the mankind was shot down ever be and this circumstance alone guarantees that it will not happen to bitcoin as well. Theoretically and practically it could be shut down in local areas without electricity and internet, but if you live in those areas you will have other problems than electronic money not working.
I kind of agree with you! But I think that in principle everything is possible! In fact, bitcoin lives, while people believe in it and keep their money in it! If what you describe is going to happen, many will just start selling their bitcoins, which will cause panic in the entire crypto-currency market and people in principle may lose interest in bitcoin, which in principle is commensurate with its disappearance!