The open question that the article didn't touch upon (probably because it's much more complicated) is where to draw the line between what is and isn't the government's business. There are many who don't buy into the "nothing to hide" argument and would nonetheless advocate for the use of a central gun registry. It's not mutually exclusive, it's just a matter of where a person draws their line of privacy. I'd imagine that libertarians are on the far "nothing is anybody's business" end of the spectrum.
That's one of many "it doesn't apply to me, so it doesn't matter" scenarios.
As the OPM "hack" has demonstrated, the government has no interest and little culpability in protecting the vital and dangerous information it has collected. If it shows this much disregard for the important information, how much less protection will they apply to the unimportant things?
