Copying and pasting @bridge_overbooked’s review because I feel the exact same way: 

“I had really high expectations for this book and it fell short for me. Butler's exploration of climate change, social inequality, and economic collapse resonates strongly in today's world, but I wanted more background on how those things happened, more regional variation as the group travelled north, and more relation to her hyperempathy. While the book kept me interested, I finished it and ultimately felt like nothing had happened. My favorite thing about the book was Butler's writing style and the journal-based format - I think I was hoping for more plot points and more of a relation to climate change!”