I sat here mulling this over. Just for a moment, think about your wife wanting to become a trans-man. Suppose she started doing the changes necessary to become one. But we stayed male. The prospects aren't very appealing, once you wrap your mind around it.
Most women, (Or at least all of those I've ever met in my life) have this idea that if they had some sort of mental breakdown, or contracted cancer that would make them loose certain parts, we'd stick by them, and help them deal with the aftermath. They, I believe do expect that from us.
But us having identity issues? No, that's not acceptable. We're supposed to be strong, and hide our disappointment. And, just because you showed mental weakness, we'll just heap a bit more on you, so you can really feel miserable. Because you didn't want to be a strong man.
Yup, this is a can of worms that nobody wanted to open.