I personally believe it's all about preference. Some ladies will not see men under the age 35, will not do a duo or couples. Certainly other races fall into preference as well. I am sure the men on here can agree that they have preference as well as you may not be racist or ageist etc....but you feel more comfortable with a certain type of person and prefer that. Just because a woman is a provider does not mean she has to accept anyone she is unattracted to or uncomfortable with.
That being said, I prefer any race in a decent age range (over 25) and any sex or sexual orientation that is respectful, intelligent and fun
I wouldn't want to see anyone personally if they didn't like my race, height, weight, age etc......it's best to avoid ladies that don't want to see you and vice versa. Also.... I will see AA guys but no one contacts me ever except maybe a few over the course of 8 years it's wierd.