I believe it because they want to avoid being label. If your sleeping with a tranny you dont get call a tranny lover or bi. You get call gay but one of the main things that attract is that she look like a woman. And also I feel the same way Aurrianna do too.
I can answer that, and the reason is to avoid the drama. I really believe that they are comfortable, but the question is "What about his family?" That's the reason why I were a mask when I CD, to avoid the drama.