It's awesome to see other people who love this book as much as I do! This book has completely changed my understanding of the world. In fact, it has given me a mental model to make sense of things that seemed ridiculous or confusing in the past. It explains why we all behave in the way we do, and how everything is driven by an imagined reality.
If you enjoyed this, I really recommend reading his next book Homo Deus as well. It's more futuristic, and builds on the concepts he covers in Sapiens.