Don't worry about NSA. If the NSA finds your computer interesting, they can remotely hack it using one of a 100 zero-days exploits, without ME. And if you are running non-ME system, it's even easier for them to hack you unless you are working with the CounterNSA.
Surely this depends on the system being run and the programs running on it. Are you claiming that a basic installation of OpenBSD is wide open to the NSA? Even if that is true, I would think that fewer vulnerabilities are better than more, and that vulnerabilities that cannot be found because their source is secret are worse than those that can be found.
