I hope this helps. I dated a man who deliberately selected a doctor because she was female. I asked him why and he said he thought because she was female she would "care more about him." As I got to know him I realized that he did not particularly like women as people and that it was more likely that he chose her because he thought he would probably be able to direct his own care by manipulating her. For me, I find the people I like and respect all look fine to my eyes, no matter what they actually look like objectively. So I think your sense that your preference for attractive women doesn't equate to "better therapy" is probably right on. I think it would be beneficial if you mention your preference to whoever you are seeing now as your therapist.