websocket: "because I believe there is a difference, I believe that some people can be 'in the wrong bodies'. I think there are typically male and female personalities, aptitudes and traits."
You could be right. I think you're wrong, as it happens, because the evidence is against you - think of all those years when people (men) believed that women couldn't be long-distance runners, or medical doctors, or comedians, or engineers, or any number of things because they weren't strong enough, clever enough, fast enough or funny enough. And now women do all those things because, guess what, the thing holding women back was not a lack of innate ability but social structures and social pressures.
But yes, you could be right. Even if you are, though, it's a huge leap to talk about someone being born in the "wrong" body. Even if you believe in innate differences, you must also know there's a huge overlap in abilities and characteristics, so some women are taller than the average male, better at physics than the average male, more interested in football than the average male. Some women (me included) prefer to wear trousers and don't like wearing make-up.
And yet those women still think of themselves as female. So what's going on there? What precisely is it that makes someone feel they're the "wrong" sex? And why is it that there's a whole new group of transgender people who claim not to identify with either sex?
In the end it comes down to the idea that some men, apparently, "feel" female. Some women "feel" male. I don't for one moment deny the reality of that feeling. I'm sure it's true for those people. But then I don't doubt the reality of someone with schizophrenia who hears voices. I'm sure they do hear voices. I'm sure that anorexics believe they are fat. I'm sure that some able-bodied people genuinely want to cut their leg off and live as an amputee.
What I can't accept is the idea that a man who "feels" like a woman really is, in essence, a woman, any more than I can accept that an anorexic really is fat. Because being a woman is, in the end, a banal matter of biology. I don't "feel" like a woman because I don't know how that feels. I am a woman through the fact of my biology.