I'm a little confused, are you asking if, after reading a book, many of them are less than 4 stars on my own scale? Or are you asking if I use someone else's rating to pick the books I read, and avoid ones less than 4 stars?

I mostly read SF, with some fantasy, and not much else. The core of my reading list is made up from books that have been finalists for the major SF/F awards (Hugo, Nebula, Arthur C Clark), sequels to those, and books recommended by other sources that I respect a lot (e.g., Locus Mag reviews, recommendations by authors who I really like, etc.).

So those probably translate into 4 or 5 star ratings from external sources, though none of them use a rating system like that. I very, very rarely end up hating the books I end up reading, though some I don't really like a lot, even though they were critically acclaimed.

You can see the books I've read in 2025, with links to prior years, in this post.