I haven't RTFT in its entirety, but thought I might as well add my two penneth, seeing as I worked in the "biz" for a few years.
Firstly, I wholeheartedly agree with what Monkeynuts18 said on page 3: "Any man who uses the phrase 'I'm a nice guy' is invariably an utter arsehole.'
I have in the past worked as an independent companion/escort/hooker/prostitute, or whatever you wish to call it. It was my choice of profession at that time, I did it as and when I wanted to, set my own rates, managed the schedule, screened all the clients myself, took care of advertising, accommodation, and so on. I could quit at any point, turn down anyone for any reason or no reason at all, no questions asked.
Drawing upon my own experience of this particular industry, which is completely different to that of the OP's, I can say that I do believe one can be a nice guy and pay for sex. I have had my fair share of bookings with genuinely pleasant people, some of whom I saw regularly and a handful of those I now call friends. Countless older men who lost their spouses, and were looking for sex, superficially, but actually wanted a bit of affection, a reason to smile, something to make them feel good about themselves.
Younger men with confidence issues, too shy to make a move with a girl they liked, needing a confidence boost and a bit of advice to go with that blowjob... :)
Of course, even with my stringent vetting procedures, there were still a few bad apples that made it to my boudoir. I once had to report a threatening stalker to the police. But I still believe that the vast majority of "punters" are just normal men with normal needs. They could buy my consent, yes, but I could have withdrawn it at any point if I wasn't happy, and refunded their cash.