why stop at gender, let kids decide what species they are, or if they even identify as an animate object. 

Thats BS

Evolution? Women give birth, that is a biological fact and cannot be changed (yet). But how are they more fit to raise, nurture and protect a child? Short answer: they're not. That's because a man can do it just fine (except for breast milk but most people nowadays don't even like that).

If the mother dies at childbirth is the baby screwed? Oh no, you lost the one person that was naturally intended to make sure you get your diapers changed, take you to school and other womanly stuff, we might as well dump you right now because it's the natural way. Daddy can't do it, that's for sure. He's a man and is not prepared fot this kind of stuff.

So yeah, no evolution here. Man and women are not that different aside from genitals. That's from a physical standpoint. Gender on the other hand is what makes all the difference.

Nature didn't intend anything. Nature doesn't intend. Evolution just occurs and whatever works best will get to continue. So what works best is what will be further improved upon. However, the situation around evolution always changes and evolution often spend a couple million years to catch up if the situation changes drastically (and you can bet human society has made the situation changes bloody drastically). So right now, we as a society have to circumwent evolution. By doing that, we aren't going against what nature "intended", because a) Nature doesn't intend anything and b) It's in our "nature" to "defy" nature. Just look at your laptop and ask yourself "is that natural?" (which, btw, it actually is, due to point b) itself. Humans have naturally evolved to exploit nature in ways that couldn't occur by themselves in nature. So that sorta makes it natural after all.)

"Nature" intended is what we were evolved to do. Humans have a higher level of intelligence and hands. It's the tools we got from evolution to adapt to the world we live in and we use them to the fullest for good or bad. You can try to debate that we're defying nature or circumventing evolution all you want but we're really not. Every tool or invention or concept we ever had is a product of what evolution gave us. 

We are agreeing in a sense. Like I said "Humans have naturally evolved to exploit nature in ways that couldn't occur by themselves in nature. So that sorta makes it natural after all."

I thought you were arguing that "x and y isn't right because it's not what nature intended", so my point was that anything humans do, including "circumventing" evolution and nature is ultimately a result of evolution and nature itself, so nothing is, per se unnatural. But I now think that I just misunderstood you.

Fact # 1.

You cannot choose your sex, it is decided naturally at conception.

Fact # 2.

If anyone believes they are trapped in the wrong body they have a serious psychological problem and need to seek help immediately.

Fact # 3.

Pretending to be of the opposite sex or mutilating your body will NEVER enable you to change what is biologically set.

Fact # 4.

The fact that we are actually struggling with understanding these basic biological facts is indicative of serious brainwashing.

Fact # 5.

Some individuals will believe that I am the one who is brainwashed and reject every single fact that I said above because it is unpleasant to them.