Depends on how old you are, or for me it did. Some books resonate at different points in a person's life. The fiction that's had the most impact on me as an adult was all stuff I read in my early 30s.

* Tropic of Cancer by Henry Miller — Perfect for a single man in his 30s. Very solipsistic and hedonistic, which is a great way to explore that decade. Each of the books in the series is a novel length prose poem. Absolutely beautiful

* Journey to the End of The Night by Louis Ferdinand Celine — my favorite book in the world. Very misanthropic, set in WWI. The protagonist finds himself drafted into the war and does his best to survive while the brave people around him die like idiots, it escalates from there. The most beautiful line I've ever read is from a part of the book where the protagonist is hanging out at a brothel: "Toward one of the beautiful girls there I soon developed an uncommon feeling of trust, which in frightened people takes the place of love." there are jaw-droppers like that on every other page

* Crime and Punishment — a cautionary tale about exactly the kind of solipsism and misanthropy that can take us over in our 30s. Fast paced and beautifully written, it reads like a modern crime thriller.

For fun conceptual stuff

* Ficciones by Borges — short stories that will twist your mind up, each are more puzzle than narrative, but tremendously engaging nonetheless. Ted Chiang is the modern writer that I would identify as the most similar in spirit to Borges.

As a note—I'm a speculative fiction author. Most of what I read these days is sff and nerdy lit fic. The value in fiction is the same as the value in philosophy, it exposes you to the inside of peoples' minds in a way that other forms of narrative entertainment do not, and the real good stuff acts as fuel for concept creation.