http://www.guardian.co.uk/world/2013/jun/09/nsa-whistleblower-edward-snowden-whyQ: Why did you decide to become a whistleblower?
A: "The NSA has built an infrastructure that allows it to intercept almost everything. With this capability, the vast majority of human communications are automatically ingested without targeting. If I wanted to see your emails or your wife's phone, all I have to do is use intercepts. I can get your emails, passwords, phone records, credit cards.
"I don't want to live in a society that does these sort of things
I do not want to live in a world where everything I do and say is recorded. That is not something I am willing to support or live under."
Q: Is it possible to put security in place to protect against state surveillance?
A: "You are not even aware of what is possible. The extent of their capabilities is horrifying. We can plant bugs in machines. Once you go on the network, I can identify your machine. You will never be safe whatever protections you put in place."
Face it. Bitcoin is already compromised. The NSA has endless resources to crack the cryptography of all communications on the planet. Do you really think they would just let people encrypt their communications freely by putting absolutely secure hash functions in the wild?
I will say it one last time: Bitcoin is a ticking time bomb. It is going to blow up any day now. Feel free to hold it for awhile but don't be the last guy holding it.