Why? Literally all I wanna do is to call myself a certain way and modify myself a certain way. I don't bother people. I don't wanna fuck kids. I don't make a fuss when somebody uses other pronouns. I'm not against freedom of speech.
I'm going to throw my two cents into this mess for whatever it's worth.
I don't care if you modify yourself a certain way. I really don't. You're the one who has to deal with the medical consequences later, so if you're cool with that, then fine.
However, it's the "call myself a certain way" that I have a problem with. Words have meanings, and when you muddy the definition of words up with feelings, identities, and embarrassing regressive stereotypes, I take issue. This is especially true because it spills into the political discourse and changes the legal definitions of basic things like "man" and "woman".
The best compromise I can come up with is this: go nuts with your HRT and plastic surgery, but you cannot be legally considered the opposite sex. Loads of people identify as things other than what they are, but they aren't legally recognized as that thing. Michael Jackson was addicted to the knife and the bleach, but he isn't considered white. That dude in Japan who wants to be a dog might spend all his money on the perfect disguise, but he's never going to be more than a novelty.
I remember this one guy who decided he wanted to be a lizard, so a surgeon forked his tongue and embedded horns into his forehead, and Dennis Avner decided he identified as a cat and started body modifications at the age of 23. He got stripes tattooed onto his body, whiskers implanted, something or other done to his eyes - the works. I remember seeing him on a documentary explaining how he thinks humans view walking down a busy street and how he views walking down a busy street, therefore proving that he has a cat's mind. Somehow, I think if he'd managed to find himself homeless, the local shelter wouldn't have taken him in, and no vet would've treated him for an illness. He died when he was only in his fifties because he shot himself. Pretty sure it wasn't a veterinarian who proclaimed him dead.
If transgender people decide they want to go the Dennis Avner/Michael Jackson route and try using surgery to resemble what it is they identify with or as, fine. I don't care, you do you, and all that stuff. But don't say that it makes you that and get access to the spaces reserved for men or women. Yeah, this means you don't get to change your driver's license or birth certificate or anything, but at least no one will feel forced to share a private space with someone who doesn't belong there and schools won't be doing regressive crap like showing kids charts with GI Joe on one end of the line and Barbie on the other and asking where on the spectrum they fit.