I am really interested in reading this thread! BUt I do agree with HG, that until you are in it, you may not know.
I can speak for the completely SINGLE provider side. I get asked all the time "why are you single ?!?!" And I always respond with "all the men I meet are married"

Which is true!
ANother reason may be, I do know as a single girl I have to defend myself constantly from guys that know about me that aren't hobbyist. Girls like us are automatically labled as being dirty ... well a good provider is going to be one of the cleanest girls you will ever meet. (Notice I say "good provider") How often do you think that girl at the bar you picked up and banged get's checked for STD's? We take countless showers, pay extra attention to our bodies, apperance, hygiene, smell, and taste. I can promise that the majorty of the "regular clean girls" don't do all that!
I do go out, but I try not to put myself into situations that might get me a bf. I am happy single, and loving my job. And I don't think I am ready to give that up.
In addition, I am a full time student working on a Masters. I am a single mom, and I work. Between all that... I don't think I have time for a non-hobby friendly relationship.
But if I do find a guy that is ok with me working in the customer service section of the adult sex entertainment industry (LOL) I have decided, I want him to hobby too. Hire him a girl once or twice a week so he can have variety and its a two way street.