I think there's as much violence, in a way, as a scene with two women having a cup of coffee in a Ruth Rendell novel - in terms of emotional violence and the violence you can inflict with language - as there is in the most graphic kind of serial killer/slasher novel you can think of.
I think women tend to write about how violence feels, whereas men tend to write about what violence looks like.
Whether your audience is in a sweaty basement club or nestled in a favourite armchair, good money has been paid, and attention has got to be grabbed if you are not to be heckled off the stage or find your novel discarded in favour of the latest volume of 'Fifty Shades of Whatever.'
I am trying to give the best performance possible in 400 pages. I want readers to be scared; I want them to be moved. Entertainment doesn't necessarily mean something trivial, but it does mean people wanting to get to the end of a book.