Trans people exist and children should be taught about sex and relationships throughout school (age appropriate etc) so they understand what they are feeling and understand what is healthy and to respect other people.
Every one claiming you can't change sex, maybe not, but you can change gender and there is more than two genders. Gender is the social and cultural way you present, sex is the biological side of things. But even then there is a whole host of different ways your sex can present, eg. Chromosome differences, intersex.
People on MN always seem to claim that they don't care how people present their gender and having a non typical presentation of gender doesn't mean you have to change your identity from female to male or vice versa. Yet the vitriol shown against men who wear womens clothing or makeup (not trans women, but cis men who just want to wear something different) is ridiculous - they get called perverts and sickos. I've seen posters worry about women who are dressing androgynous or masculine, call out women with masculine features (facial hair, broad shoulders, big feet, tall) So clearly you're not OK with people expressing their gender differently!
I just find it mad that people are trying to act as if multiple genders don't exist, and that you can't change your gender when it's very well documented that many cultures do not have a gender binary and there have been many studies and scientific papers on gender as a social construct. The government, doctors, and charities all accept this as a real thing because it is! Transgender people have been around for a very long time, and it's incredibly disheartening to see fellow LGB people shit on trans people when they were at the forefront of the civil rights movement.
All this talk just hearkens back to the gay panic and think of the children bullshit from history. Children don't magically believe they are trans because someone told them trans people exist. And looking at wait lists for treatment for teens experiencing gender dysphoria, to act as if they're getting force fed meds and encouraged surgery is also inaccurate. I trust doctors and health care professionals and value their opinions a lot more than random strangers on the Internet.
And as other posters raised the whole bathroom stuff is dumb as hell, do you really think a cis man is going to give a shit about a bathroom sign if he wants to assault a woman? Or do you just think anyone with a penis is a raving predator who could rape you at any second? Other posters have shown the photos of a trans man in a women's bathroom and a trans women in a man's bathroom - do you seriously believe any woman would be happy with a trans man coming it to pee? He would be kicked out immediately. And a trans woman in a men's bathroom would be kicked out or at worse assaulted. There's been many women, including butch lesbians, who have shared their experiences of being kicked out of women's bathrooms because they look masculine and someone's gotten panicked and wanted to remove them. All this fuss over trans people has just made people more critical of how you present your gender and it is a ridiculous backward step.
I'm very glad to see this thread has had other posters come out in support of trans people and trans right, it sometimes feels overwhelming and I'm sure I've not changed anyone's mind with my points but I just wanted to show my support and share my opinion. Adios!