Allow me to respond to a few of your concerns.

You are acting like it's some big brave thing you did for having sex with a woman just because she happens to be transgender.

That's not what I'm trying to convey but I do think there is a stark difference to how many men in my situation would have responded to her telling me she has a penis. We've seen some of the extreme examples of how some men react but in my case I was nothing less than welcoming to her and her anatomy. I do think that my reaction was in the minority of how many men would have responded as I would assume most men would not be open-minded and accepting (although I will admit that this is conjecture). I understand there is a constant fear in the trans community of being marginalized by some men because of a fetish, but I do not think that in this case that was my motivation for what I was doing.

You are stripping her down to just her genitals without thinking for a second about anything else about her.

I understand your concerns but as I mentioned in the post, "I wanted to hook up with her regardless but now this was going to be something special and unique". I wasn't only interested in her because of her penis. That was part of my excitement. Here was a woman I was attracted to, a woman I wanted to have sex with, and it had nothing to do with what kind of genitalia she had. Although I do admit that up until that point I had made the assumption that she had a vagina.

please do not go seeking out more of them because of some fetish you're trying to fulfill.

I didn't seek out a transwoman that night. I wasn't trying to fulfill a fetish. My night was about hanging out with my friends and nothing more. I wasn't preying on someone. The fact this happened was merely an act of fortune (the fact I hooked up with any woman that night, regardless of their genitalia).