Just to chime in, I too value when community members can provide more detailed arguments on things. There's a lot of very interesting topics on here that are simply WAY outside my domain of knowledge. The modern world is complex, and while I have opinions on a lot of topics I'm barely qualified to, there's a very real limit on how much we can even have any kind of view about.
I enjoy the comments on places like HN, because it provides a good accompaniment to Wikipedia: where Wikipedia is a summary of the topic, as it stands, comments on HN are a summary of the discussion about the topic, as it stands. (Well, when we get at least two different perspectives contributing and discussing, which is why we should be careful with groupthink and downvoting dissenting views.)
I enjoy the comments on places like HN, because it provides a good accompaniment to Wikipedia: where Wikipedia is a summary of the topic, as it stands, comments on HN are a summary of the discussion about the topic, as it stands. (Well, when we get at least two different perspectives contributing and discussing, which is why we should be careful with groupthink and downvoting dissenting views.)