Surely if you 'feel like a man' but also want to give birth, you haven't understood the first thing about being a man
I have increasingly come to be convinced that transmen think that:
woman = an inferior being who deserves to be oppressed, and may even want to be oppressed.
man = superior person who deserves to get to oppress others.
Nothing about biology, they are fine with other women being oppressed, they just think they belong to the superior class. Biology has nothing to do with it, in their heads. (Of course as long as they have an uterus, they will be oppressed to that their reproductive capacity can be exploited by patriarchy, but they don't see that. I wonder when there'll be the first transman who wonders why "he" can't get an abortion in Ireland ... there already was the case of the transman who was surprised that a rapist would target "him" and explaining "his" gender identity didn't help.)
It is a bit like poor Americans who believe that they are, in their true, inner selves, millionaires, and their wealth will soon materialize, and they don't want to pay any taxes to support those inferior, bad cis poor when the day comes that they transition to millionaire.
Just even more delusional because poor people can become rich (though it is unlikely) but women cannot become men, and only a lucky few manage to pass so well that they can get male privilege when it comes to pay, etc.