For me for example its “Eat me - a natural and unnatural history of cannibalism” by Bill Schutt. Its an amazing book that covers cannibalism in animals and then the history of it in humans (cultural, survival & medicinal cannibalism).
I got a lot of “oh why would someone read something like that?” And “that not something fun to read about!” From relatives but my friends enjoyed the stuff that I could tell them about cannibalism!
I collect lesbian separatist sci fi.
Most of the books in the genre aren’t conventionally ‘good’. But there’s often a rawness to them that I love. Good authors can control how much of themselves they show to the reader, less experienced authors just put it all on the table.
Plus I had a weird upbringing that made FLDS people look like hippies, so seeing harsh gender divides through a lens of female empowerment is interesting to me. Like bizzaro-world.