Hate…a strong word

I usually post about 5*'s but today I'm going to post about a 1* on "Boy In A Band". The reader that posted it said she hated the book, hated the characters, hoped I hadn't written another, and then ended with she hated to post negative reviews. How do I feel about this? It makes me really value the readers that take the time to post that they loved the book. Those readers get me and my style of writing. It also made me look backwards and try to figure out if I ever hated a book, and hated it enough to write a nasty review; no can't say that I have. There have been some books I didn't like as much as other's, but I've never HATED one. She claimed she almost couldn't finish it. Well here's what I really don't understand----why did she then? If you hate something so much, why waste your time? I know my style won't appeal to everyone so negative reviews I can't focus on too much, especially when the 5*'s clearly overshadow the 3 1*'s. And as for writing another book, well sitting down at my keyboard today!