The Guardian has this article on why men use prostitutes.
www.guardian.co.uk/society/2010/jan/15/why-men-use-prostitutes?fb=optOut
"just over half were either married or in a relationship with a woman."
"Research published in 2005 found that the numbers of men who pay for sex had doubled in a decade."
"Almost half said they Âbelieved that most women in prostitution are victims of pimps ("the pimp does the Âpsychological raping of the woman," explained one). But they still continued to visit them."
"Ahmed said he thought the woman might feel "relief that I'm not going to kill her"."
"Lots of men go to prostitutes so they can do things to them that real women would not put up with."