This was part of a post by JR in Ember's thread.  I didn't want to hijack that thread over this, but found this point interesting:
"...My unscientific opinion is that there may be more ladies in the hobby than you would think just because they would like to have sex, they don't need the money that much. A number of the ladies I have met over the last 50+ years in the hobby have had a full time job. True, most had children. But, they don't want to put up with the dating game. I don't think the hobby is always about 
money with the best ladies. It is also about feelings. ..."
Okay, I accept that to a degree in some instances.  So what about the girl who is not that interested in sex or wants to do it, doesn't get aroused, unless there is money dished out, and in such instances gets those feelings/enjoyment most of us get without that?  I 've seen this.  In other words they only seem to enjoy it and reciprocate the feeling if there is a tangible exchange of money though in every other respect they see you as a boyfriend as would any casually dating female.  
So what do you think?  What is going on in the mind of the female that only enjoys sex if she is paid?  She enjoys companionship, normal dating, all of it, even wants it, but is only interested in escalating and enjoys sex, and gets that warm feeling, if it ends with the transfer of a fee, but is only in the 'business' in that sense and in no way considers herself a provider and would be disappointed, even mad, without the fee.  What is she thinking?