I'll dodge specificity and just say I value HN for commentary by thoughtful people who contribute information and opinions on matters that interest me, but for which I have less than expert chops. This covers a wide range of topics.

And even in those few domains where I might possibly be an expert, I occasionally get turned around by HN commenters or the stories they submit. That keeps me growing.

I'm deeply grateful for the quality of the HN community and to HN for maintaining it.