Why would it matter if they were born with penis or had one surgically constructed? Does that mean if a man has an accident and his dick has to be reconstructed he's not a man anymore or that if a gay man is still attracted to him, that gay man isn't gay? And I never said I be fine with sleeping with or dating a trans guy before surgery, I wouldn't be. But afterwards they are men and as a guy attracted exclusively to men, I'm gay.

Let's break this down:

1. What is constructed by phalloplasty surgery is not, in fact, a penis. It doesn't function like a penis and it only vaguely looks like a penis in the most successful cases (but even still you can tell something is wrong). It is prone to complications, not only to the flesh tube created but to the donor site.

2. Even if the phalloplasty were successful and "passed" well enough to put it out of mind, it doesn't change all of the other elements of biological women that I as a homosexual man find unattractive. HRT only goes so far in masculinizing appearance. While it reduces buccal fat around the eyes, it doesn't lead to the development of a stronger brow bone (giving transmen that "methhead" look), it doesn't change the size of your hands or feet, etc. Transmen have noticeably female faces the longer you look at them. When gay men and lesbians say we are attracted to the WHOLE PERSON of the same-sex, we mean it.

3. If a long term partner were to lose his penis to an accident, to cancer, etc., I may stay with him. Would we have sex? Maybe, but most likely not. We would likely still be intimate because he still has every other male feature, unlike a transman who just has the features of a roided out woman. For me, it doesn't feel good to be intimately touched by a woman. Unlike men whose touch is soothing, women's touch feels draining and violating for me. That won't change because a woman is taking steroids and chopped up her body.

4. Based on the last line, I do believe that this poster is actual a gay man, albeit a very naive one. The truth is that the transition process is like Plato's allegory of the cave. It is very easy for us, like people who transition, to believe that the end result is going to be a you of the opposite sex. I remember being a teenager and following a few transgender youtubers (such as skylarkeleven). I believe that the longer she was on cross-sex hormones, she eventually would look just like a man. Nearly 13 years later and she still looks like a woman with a beard (although now she's sporting those glasses that transmen all love because they cover the browbone).