How not to write a book review

I must admit when I read this review I was mystified. Correct me if I'm wrong, but isn't a review supposed to be written after one reads the book?

I suppose I should feel flattered that my work was at least capable of eliciting strong emotions, but I still wonder what was the point? Just to let an audience know that it was too graphic in her opinion? All the reviews, the cover description, everything states plainly that this is a romance novel about a woman coming out of an abusive marriage.  I'm curious, what are your thoughts?

 She wrote...

" I couldn't even finish reading this book.  It's not bad writing, just the subject matter.  Very graphic and I'm not the faint of heart, but this bothered me to read.  It wasn't enjoyable.  I couldn't finish it.  Sorry.  I hate giving a bad review to someone whom I'm sure put her heart and soul into it, and I can't even give it a proper review because I didn't finish it.    I apologize."

I posted this on my  "SheWrites.com" Blog and the popular opinion among the other authors and writers is that writing a review like this is a bit of a waste, for the following reasons; The point of writing a clear and honest review is to provide feedback of the product. To tell other possible customer's why you would or would not recommend the product, or in this case the book. Your experience whether difficult or pleasant while using/reading it. Honest reviews are helpful to everyone, they open dialogue about the item on average how well or poorly received it is based on the customer's/reader's experience. I value reviews and view them as constructive criticism which I use to improve on my writing, challenge myself, and hold myself to a higher standard.

Of course I love positive reviews, who doesn't? I enjoy the communications I have had with reader's when they tell me their thoughts as they are in the midst of reading my novel. I am touched when people say they were brought to tears or laughter by my writing.  
I also  expect to have reviews where people say it wasn't for them. I get it everyone has different tastes, and I am just thankful that they spent time in the world I created, whether they liked the experience or not., and using those reviews I can identify my weakness if it is within my control and produce a better quality product in the future.

My plea to all those that take the time to write a review; along with honesty, be productive, be precise, say why you were dissatisfied so that someone may learn something, and most important if you must write a disclaimer which states "I can't even give it a proper review" then by all means please don't!
 The original blog post can be found @  http://www.shewrites.com/forum/topics/thoughts-what-would-you-think-if-you-recieved-this-review?commentId=3506464:Comment:856619

Thank you to all my readers, fellow authors, and reviewers. I truly appreciate you each and every one!