I don't think that I am stating a position of cypher-anarchy, but advocating a position of personal privacy guaranteed by the Fourth Amendment.
Don't forget the other side of the conversation. While the government cannot (notice I did not say they might not try) effectively control communication, there are other points at which control may be exerted: 1) communications *with* the government (IRS, Social Security, etc). 2) communications using someone else's equipment/network (university, employer, etc) 3) communications with anyone (Internet merchant, etc) who says "this is not what <MasterCard|Visa|AmEx> approves..." Each of these may have compelling reasons for complying with what the government wants even if it is not law. IMNSHO "law" is just a means for exacting retribution/revenge - if you have to resort to it, you have already lost. Warmly, Padgett