Most people don't care enough to put up with the mild to moderate inconvenience and learning curve. It really isn't a big deal if the NSA reads my email most of

Most people don't care enough to put up with the mild to moderate inconvenience and learning curve. It really isn't a big deal if the NSA reads my email most of the time. None of it is interesting enough to them to actually show it to a human. Of course, that attitude being widespread means it's easy for the NSA to spy on people in situations where it might have a big impact on politics.