What biological and scientific evidence is there for being gay that there isn’t for transgenderism?
Being gay means being attracted to people of the same sex. It is an observable fact that this is true - some people are attracted to people of the same sex.
We need a definition of 'transgenderism' in order to see if a similar statement can be made for it. So first we need that definition. There seem to be several, so I'll try it for some of those.
Trans = 'born in the wrong body' - not true since this is impossible.
Trans = 'female' brain in male body (or vice versa) - it has not been shown that there is any difference between male and female brains, let alone how a brain could end up in an opposite-sexed body.
Trans = Gender dysphoria, which is a belief that one is in the wrong body - mental disorder, since this is not possible.
Trans = likes presenting as/ behaving as the opposite sex - do I really need to point out how regressive this sort of stereotyping is?
Trans = fetish, particularly men who are aroused at the thought of themselves as women (autogynephilia) - certainly exists.
So we have trans as a mental disorder, a need to adhere to gender stereotypes or a fetish. Can you explain to me how this is comparable to being gay?