I don't know how I got interested in prostitutes, but as I get older, and my sex drive increases, I find they're more of a necessity and less of a lark. If I don't get some kind of release at least once a week (and masturbation doesn't do it for me nearly as well as someone else doing it), in a massage parlor or with a prostitute.
I'm happily married, but my wife and I don't have sex nearly as often as we used to before our daughter was born, and unfortunately, it's starting to wear on me. Not only that, but when we do end up having sex, I have to do all the work, get her all worked up and then get to humpin' at her command. It's fine and everything, but sometimes it's nice to have someone focus on me, and my sexual needs and wants, for a change.
It's not emotional betrayal but rather a physical one, but I strangely don't feel guilty after, probably because I'm faithful in every other sense of the word. I always, always, always wear a condom so I don't bring anything home, but I think I'm getting more turned on by the random nature of the hooker-john relationship and the sexual freedom prostitutes engender.
Every time I go to a brothel, it gets a little bit more fun, also. The freedom I enjoy, the challenge of finding a whore I connect well with and can enjoy the act with, rather than it just be someone who's there because she has to be. The last time I went, I got to have sex with an older (then me, she was about 38. I'm 31) Russian lady, who still occupies a warm place in my heart because she looked me in the eyes as I climaxed and genuinely seemed to be interested in my pleasure.
That's what turns me on.