And I would really like EmpressCixi to answer,
At what point will society think it acceptable to grow a human in a bag?
This is effectively what you are predicting? Despite the few doctors willing to experiment with transplanting uteruses into males, the reality is... without all the other necessary contributory systems linked up and working with some control centre that has been reprogrammed, you are saying that society will allow a human to be grown in a 'meat bag' within a male who feels entitled to it. Because that uterus, even though it may have come from a female donor, is just that.
A bag in which drugs will be injected to 'grow a foetus'.
And you think we are anywhere near even a tiny fraction of people thinking that this is acceptable?
And while you are at it, a male cannot 'get pregnant' as they will not have working ovaries. Or are you predicting that ovaries with eggs will be viably transplanted, again along with the entire supporting network of organs and processes.
No. They may have an embryo implanted. They could now have an embryo implanted in any part of their body. Still would not be them 'getting pregnant' and still would not be ethical.