"The algorithm provides virtually no cryptographic security..." - https://en.wikipedia.org/wiki/ROT13

It's very well-defended against random leakage across the Internet, against hacking attacks, etc.

The government has an easier time of getting access to it if I piss them off, but if I do piss them off enough they can essentially invent bad stuff regarding me anyways, and I'm screwed no matter what. Once I came into karmic balance with that I accepted it and went on with my life.

Of course, what's good for me is not necessarily what's good for you.