Breakfast of Champions, Kurt Vonnegut

How much you enjoy this book depends on your patience and education. Kind of like late Terry Pratchett books.
It’s not a science fiction. No more than King’s “Hearts in Atlantis” is. And it’s packed with themes, although it glances by most of them. There’s a lot about environmentalism, and “America bad, communism good”, and homosexuality, and one of the characters is a transvestite, and mental illness caused by chemical imbalance, and all of our thinking being chemical reaction.
One of the characters is a failed scifi author, which allows for both unhealthy dose of self-irony and “story withing a story”. Most stories of that author dedicated to how America ruins ecology.