Only people who need to encript will bother to deal with the hassels of encriptation. Encription is big flag that says to NSA's computers, "Look at me!" NSA can crack your 128 bit PGP in a matter of minutes.
OK then people will go to 256 bits or 1024 bits. Even NSA has it's limits in terms of capability and resources. The fact of the matter is that most people don't use things like PGP because there is no real need. But once the Government decides they want to read your e-mail, check out the web sites you are visiting then the apps will be written to make hiding yourself easy and common. Just a natural reaction. It doesn't have to be that way but that's the way it will probably go. Time will tell.