Thai."matrimonial prostitution".

There are gold diggers everywhere. You have to ask why a girl is attracted to a relationship with you, a foreigner, especially if she is quick to it. It is my experience that most Thai girls are after my money (and don't take any), but I am picky and patient. Your mileage may vary. A sizable percentage of non-prostitutes are attracted largely to the farang's money and material well being, and/or some Hollywood-based illusion they may have of life in a farang's country. They may simply look to a farang to take care of them, everything, whereby they'd "have it made in life". Matrimonial prostitution (though they don't see it that way)
The DOCTORTILAC has much more experienced In addition to my own experiences since 2000, and those of my friends and associates with mainstream Thai culture than with the foreigner-oriented, prostitution-common areas, though I'm quite experienced in both, with quite a large number of my own experiences of various sorts. However, compared to the vast majority of farangs who live in Thailand, I'm far more experienced with the mainstream Thai ladies and Thai gentle-men, and can educate and advise other farangs accordingly, providing a greater overall perspective.
The prostitutes are far more willing with sex, quickly, so you don't waste much time getting them there, they don't give you problems when you've had enough of them and pay them off (quite unlike a normal lady), and there are a variety of other lovely beauties out there for your next adventure. For what you pay per night, it's pretty cheap when compared to the real costs (both time and money) on an alternative, serious relationship, and you avoid the emotional pitfalls of something more serious. Even if you keep a prostitute for a few days or weeks and enter a grey area relationship, she'll usually be out of your way with her next distraction -- another farang man in her normal environment...
"Be careful what you wish for, because you might just get it!"