I've only got 1/3rd the HN Internet Points. But I write a lot of comments here.
I feel like a lot of people actually read the comments here, and consider them, and may change their mind. I've seen enough conversations where someone says something, another person argues something different, and the first person agrees and thanks; and ocassionally, I see that person bringing it up with the new state of mind in future threads.
So, while "someone on the internet is wrong, I must correct them" is generally a fruitless endeavor, it seems somewhat fruitful here. I get good vibes from helping other people in that way.
Also, I am sometimes corrected and I get good vibes from learning new things. Ocassionally, you can rant about something related and say it doesn't make sense or isn't documented, and someone will point you at the documentation.
Do I spend too much time here? Probably. But it's a better time suck than many other places. I try to stay out of the political threads, although not always successfully (rule of thumb, it it's 100+ posts and not connected to my technical experience, don't click, or if you do click, just skim for current events knowledge)
Also: HN loads fast almost always, and has the best chance of loading in poor conditions compared to anyother site I might want to look at.