I know. And I feel like I know these people...
Thinking about that...
I love reading mysteries. Usually the "cozy" kind vs police procedurals. I started a series about 2 years ago, just picked up several of one author at the library. Loved the first story, so I requested all of the series, then read them all in a row.
I was just madly in love with the characters. The male protagonist was so awesome. His wife, incredible. His children, amazing. The way they all spoke to each other...not very realistic, but awesome all the same. And I fell in love with Martha's Vineyard thanks to the books.
I'd read 3 or 4 books, and was enjoying his progression (first book he's single, for example), and I went to the author's website...only to find out he'd died not too long ago.
I was sad for the author, I was sad for the author's wife, and I seriously mourned the mystery series. I still had several more books to go, and I read each one with enthusiasm and love, but with dread as well, because each book I read was a book closer to the end. I didn't want to say goodbye to those people, not one little bit.
Similar is the one Dick Francis character that appears in more than one book, Sid Halley. Now that DF has died, I'll never get a new story about that loyal and strong-willed man. Sad for DF, his family, the characters, and me. Sigh.