QuoteI'm not sure. Seems to be a kind of infinite loop here, as in Come to terms with being trans -> Scared of infertility -> Well, if you have doubts then are you sure you're trans? -> Back to stage 1.
Oh, that's exactly where I am now! The Loop of Doom. I don't have that many family left anymore, so I feel panicked that I may well be alone in the not to distant future. I don't put much faith in romantic relationships, and I feel that being blood related to living people who love you is incredibly important, as relationships like marriage co-habitation etc, and such are comparatively tenuous and short-lived these days. As my parents have been amazing to me, I'd love to be able to be a great parent to my child, plus of course, its frighteningly lonely being alone when you're old and grey!
In the end, I guess its a question of self-realisation versus external-realisation: Either become who you need to be, to the potential detriment of your future (IE: being childless or having to adopt) or take a hit, have kids and let their happiness and life make up for the loss of your preferred self. I hate that this is the sort of decision that has to be made, but ultimately it is. Happily though, there are many variables, and it can be possible to be trans, happy with yourself and have blood-related children. I know a woman who was hormones for three years (full dose), stopped for a short time, (and with medical help), managed to provide just about enough healthy sperm to conceive successfully via IVF. It was a long shot, she was VERY lucky. But sometimes indeed, you can have your cake and eat it, so to speak.
Good luck!