Sorry for the late reply @puds11. You asked me:
Can I ask more about your view on people not being able to be born into the wrong body? This is one of the terms I hear a lot as to why trans people undergo transition.
I am a scientist, and I therefore understand that we are a sexually diamorphic species, i.e. there are two sexes, female XX and male XY.
Women know they are female because they have a vagina and breasts. They do not "feel" female due to liking pink, enjoying shopping, being good at ballet, or preferring to have long hair. These are gender stereotypes. Yes, many women have a preference for some or all of these things, but that does not define their femaleness, and does not exclude women with short hair who play rugby and drink pints, from being female.
You will often hear accounts of transwomen (born male) saying that they "always knew they were female", because they enjoyed wearing dresses as a child, and preferred "girls' toys". This does not make them female. This makes them a male who prefers things more traditionally associated with females due to (outdated) gender stereotyping.
What makes you feel like a woman? For me, it is the fact that I look down and see a female body. And also that society treats me like a woman - sometimes male strangers insist "Ladies first", I have been discriminated against at work for being female, I get judged on my looks far more than men do, I am careful where I walk alone late at night to try to avoid sexual assault by a man. Other than that, I am a bit of a mixture between male and female stereotypes. I wear skirts some days, and trousers other days. I have had short and long hair styles in the past. I love science, but also baking. I hate the colour pink. I don't enjoy clothes shopping.
How can a man say that he feels like a woman in his head? He has no idea what it feels like to be a woman. He does not have a female body (has never experienced a period, has never had his breasts stared at by men), and he has no lived experience of being a woman (has not had to worry about his safety in a car park at night, has not faced discrimination at work due to being female, etc). Yes, perhaps he enjoys wearing a skirt, high heels, and make-up, but identifying with sexual stereotypes does not mean that you have a "female" brain.
I fully believe that SOME people who identify as transgender, are genuinely distressed by their body, but that does not mean their body is wrong. It means they have a psychological disorder. This may be caused/exacerbated by previous sexual abuse, autistic spectrum disorder, feelings of being homosexual and fear about whether family/society will accept them, or other mental health issues such as depression.
Anorexics have genuine dysphoria about their bodies, but we do not encourage them to lose further weight. We try to explore the psychological issues that are leading them to think they need to lose weight.
There is no scientific proof that someone can be "born into the wrong body". I think genuine gender dysphoria must be awful, and I think that those individuals deserve our help and support, especially children and young people. But that support should be counselling, CBT, and other psychological therapy that helps them to feel more comfortable with their bodies.
I hope I have managed to explain this well. It's been a busy old day, and I'm very tired!