This attitude is what I see as Bitcoin's primary risk factory. It's a culture of arrogance that reminds me of pre-crisis finance, when it was popular to say things like "the Federal Reserve chairman is more powerful than the U.S President."

It's very easy to ban - make it illegal to sell Bitcoin, force ISPs to block international sites that do.

The Bitcoin code is open source. Anyone from anywhere can download the code and run a local copy. Your coins are securely stored across computers all over the world. Your balance cannot be frozen by any authority. Maybe central exchanges that convert fiat to Bitcoin could be regulated, but mining cannot be stopped, transactions cannot be stopped. Unless governments all over the world shut down electricity and internet.

At that point question mark is on the government that does this rather than Bitcoin.

Please lets not start this debate. Times and times again it has been proven that software is not secure. OpenSSL was also thought to be secure for quite some time too..

That does not mean it's secure, but at this point it's looking more secure every day.

Bitcoin itself cannot be stopped, but it's utility as a currency (or, as it is now, a speculative investment) can be.