Book Recs: 10 Books about Characters with Unique Hobbies/Passions

I love reading about characters who have a hobby or something they're passionate about, especially when it makes a big appearance in the book. Usually these are things I don't know much about, so they're really interesting to me. And of course they add another layer to the character and help me understand them more. That's why I've compiled a list of ten books I've read about characters who...
 

Book Review: Shatterproof by Xen Sanders

Grey is tired of struggling with depression and doesn't want to live anymore. Saint doesn't know anything about himself or his life other than the fact that he's not human and accidentally kills everyone he loves when he feeds from their life in order to fuel his own, but he hates himself for it. When Saint and Grey cross paths, it seems like a perfect exchange---Grey gets the death he wants and...