Everything Nothingonthetelly said.
Males and females have specific reproductive roles that are mutually exclusive and it is not bigoted to say so. Nature does not victimise anybody by making them one sex class or t'other.
Thinking you're above nature and can just juggle the sex classes about for your own vanity project is the height of narcissistic psychopathy. Transpeople can have as many children as they like providing they have not rendered themselves infertile (or have naturally occuring infertility of course, but then they are in the same boat as anybody else who suffers infertility). Transmen being unable to impregnate and transwomen being unable to gestate are not problems that need solving, in fact they are just not problems, full stop. Our bodies do not come on a mix and match basis and whilst middle class white women are probably not going to be coerced into giving their reproductive systems to anybody else, history tells us that once there is a demand for body parts, poor women of colour often end up supplying them.
Women in Nepal, (because they have light skin), are being drugged and having the skin from their backs flayed off so that it can be sold to be used in cosmetic procedures so that rich people don't have to suffer the scarring of skin grafts. Often these women have already been trafficked and prostituted. Even entertaining the idea that men should be able to get uteruses if they so desire one opens a gateway for horrific abuse of women. The only saving grace is that they will never be able to get a male body to gestate a baby, it's too complex and you would literally need to change the body into a female one, which is impossible. Artificial wombs outside of the body are more likely and we are nowhere near that either.