Given that you literally gain nothing by preventing this use -- I'm assuming you're not fielding other offers for usage of your HN posts -- I don't see why you'd care. I realize this is a common gut reaction, but I'm wondering if you can explain why you don't like it more explicitly.
If you genuinely prefer a less-restrictive license, more power to you. But the argument that people should license their work under a CC license to make things easier for publishers is a bit like my boss saying "Why don't you just work for free so I don't have to go through the hassle of having to pay you?"
Now I license my content as CC-BY-SA. Recently a for-profit blog took some graphs from a post I wrote and added context in German. This was totally within the lines of the license, and I thought it was pretty cool that people in Germany were now able to benefit from my work.
But the contributors like pg are already creating and publishing these articles for free. Most of them benefit only indirectly from their writing, and that benefit is increased, not decreased, when the writing is distributed to more readers.
I suppose it's less about wanting to get paid for my work as much as it is wanting to be able to control whether or not I get paid for my work. If I think that somebody has a valid reason to use my blog posts, then I might let them. But I do want them to get my permission first. Maybe some people are comfortable with giving anyone and everyone the ability to use their writings in whatever commercial environment they want to. I personally am not.
...but regardless "It'll make the publishers' lives easier!" isn't a very convincing argument to me. :-)
If you intend to be a writer, you might think about things a little differently. As a given, you'll want to get paid for what you write, probably by being commissioned by a magazine for a piece or by working as a staff writer. In this case, you probably feel squeamish about giving your work away for free since you're sometimes able to make money off it.
If you're already willing to publish a piece for free on your blog, it seems unlikely that you would later be able to sell it to a magazine. Magazines seem to like original content, and (with the exception of Hacker Monthly) wouldn't want to republish something already out there.
A few people have experimented with republishing their blogs as books. The two that come to mind are PG's Hackers and Painters (his essays weren't exactly a blog, but they're pretty similar in that they're regularly updated freely accessible online content) and Scott Adams' Stick to Drawing Comics, Monkey Brain. From what I've gathered, both of these had limited success, making this strategy of generating income from blog content seem rather unfeasible.
The only remaining strategy for making money off your blog is ads. This has certainly been proven to work, although only for blogs in the top one percent or so in terms of readership. Boing Boing, the most read blog on the web, licenses it's content under a Creative Commons license, and it doesn't seem to have hurt it much. XKCD also releases all its content under a CC license. (They both use the Attribution-Non Commercial license, which does raise some questions about what would happen if they removed the non commercial clause.)
So, if you're not in the top one percent of blogs, it seems like you don't have much to loose by giving your content away, and having it available in as many places as possible. You can turn the notoriety you gain from people listening to your thoughts and ideas into something profitable if you like, such as promotion for contract work, publicity for a book you write, or even starting a startup incubator. Don't get caught up in the details of the value of a few blog posts, think big picture.