Rather than question, I would call this as a storyline, and like others, you also have some loop holes.
Firstly your age and history, that showing having two years steady sex and now a guy who can satisfy you but not regular, still arrange for gigolo, the question is too frill. The biggest drawback of the story is, what is the place you entertain these men? Unless you have that much of financial security to have your own condo, you cant go ahead with this.
Second drawback is, look at the question, its not a question at all. Its more of a background info.
Answer to your question, a lot women hire gigolo for three reasons. Either they are alone and want to have a meaningless hardcore paid sex without any string attached. Second reason is, they are wealthy enough and not satisfied with their husband. Third reason is they are alone as divorcee and passed the age of attracting guys. In all three cases, they are wealthy enough to pay for the sex. Yes a lot of matured women are going for paid sex these days.
Answer to your second question, what you are doing is not right, at this age you cant keep on running after all married guys. You are not only risking to break a marriage, you are gaining a bad reputation for yourself as a ****. In near future if you get married at all, your this chapter of sex life wont be thrilling to your future husband. Also, the guy needs to be that good on bed, else you will look for other options. Why dont you close your legs for now and find your life partner?
From what I read of your question, its much more clear to me you are not asking a question here. Rather you are looking for guys who wants to have paid sex to write you on Personal Message. If that really is your intention to pick your guys, please dont write anymore or dont look for your probable customers. There are plenty of hooker picking sites, this is not one.