I realize it's the opposite of what this site is about, but the greatest enjoyment I've gotten from HN was always from discussions about non-technical, everyday life stuff where things get surprisingly deep. Two posts that stood out to me in recent memory were
1) https://news.ycombinator.com/item?id=30161578, a discussion about the hardships of becoming a farmer. I especially liked dpatru's comment: "The natural state of man is poverty.[..]".
2) https://news.ycombinator.com/item?id=27038139, a discussion about the diamond industry. Linked is a comment thread about a guy buying a synthetic diamond for his wife and the ensuing trouble. There were numerous quality discussions about social interactions and psychological differences between the sexes. A salient meta comment by akarma: "[..]it's like you expect all women in your life to be like many people on HN — hyper-rational, utilitarian devs who would never want a mined diamond because a cheaper artificial one with better clarity exists[..]"
1. Cool programming stuff, not involving politics or corporate politics flamewars. Generally narrowly focused on one task. (Make discussion more general and framework / language bikeshedding starts.)
2. Career related stuff. It can be useful. But sometimes it too feels like echo chamber.