One of Susannah Breslin's projects: Letters from Johns. The project provided (it wrapped in 2009) an opportunity for men who've used the services of sex providers to share their stories, motivations, and experiences.
A sample from a letter:
I was a thirty four year old virgin when I first visited a prostitute.
I've always been shy and a bit of a computer geek, and somehow I missed out on opportunities at college and university that might have got my sex life off to a start. Once I graduated I ended up in an IT job, full of other single male geeks. None of us had much in the way of a social life, but I was furthering my career so it didn't seem to matter much. It was only when I hit thirty that I started to worry about the other things missing from my life. At that point, my age and lack of experience were a major worry. I was tempted by online dating, but knew that anyone I might meet would be more sexually experienced than me, and this became a major stumbling block.
At one point, I seriously considered sexual surrogate therapy, but in the end the price put me off. It did, however, make me start thinking about paying for sex, but at a different level. Websites and forums are what I do, and mostly how I interact with other people, so it didn't take me long to find forums devoted to escort work. I researched diligently, read up on the pros and cons, and the dangers, health and otherwise, of seeing escorts. The forums were an eye opener. The escorts posting sounded genuine, even relatively normal, and not the junkies I'd expected. I made up my mind to go for it.
The rest of the letter, and many more, here.
One of the original letter writers sent an update letter, two years after he sent his first letter. Link here.