Originally Posted by
thechaosfairy
They're not men... any more than you're a man.
The actual science of it is that the human body, whether XX or XY, can develop either kind of secondary sex characteristics (breasts, hair, body and face shape) dependent on what hormones it's exposed to.
Our genes don't care whether those hormones are introduced by our ovaries/testes or by injection.
There are, for instance, many girls out there who look outwardly normal but find they have a Y chromosome when they start developing male characteristics at puberty. Medical science can help them stay feminine.
We don't yet know all of what makes a person transgendered, but I'd say it's likely to be just as much biological as psychological, at least based on some of the research that's been done.
For instance, an unusually large proportion of trans women (women who are born with male bodies) are left-handed... What does this mean? We don't know yet. A lot of trans men (men who are born with female bodies) have higher testosterone levels even before they introduce hormone therapy.
By the time a trans person has had several years of hormone therapy, they are going to outwardly resemble their psychological gender in MANY ways, even if no surgery has (yet) been done.
A lot more trans women than trans men get surgery at present because the surgery is more effective (it is very difficult to construct a functioning dick, much easier to construct a functioning vagina) but surgery is not the whole of transition.