I'm really digging all the thought-provoking posts by Doreen! I've sorta wrestled with the idea of being 'fake' too, but much of what is seen as female IS fake, even for cis-gendered women. So many women out there are not fond of dresses, makeup, and even 'girly' things- but they do not identify as transgender in any way, either.
Personally, I'm more in-line with Sarah's situation(at least I think so) I love my wife, she doesn't know i'm trans, but the extra hole isn't at all necessary for our relationship. And I would only get SRS if I started to develop extreme dysphoria over it; but right now, the opposite is true, the very idea of SRS makes me nauseous on me.
I had basically allowed myself to become a cuck(and this was before seeing myself as trans) because I lacked meaningful intimacy in that department, work constantly, and was not in touch with my feeling at all. Honestly, I'm hopeful that me being trans will reignite the sexual side of our relationship and make my wife truly happy again.
But, I like to get off topic ALOT - So back on topic...
I agree with the general consensus that it's totally not an obligation to disclose that info. And I'm on the side that believes, if there is absolutely nothing tracing me back to being MAAB, then just consider yourself never male to begin with.