Ok, so I have been in too many arguments about this sort of subject and through those I have solidly worked out where I stand, because of this, the below is a little long, so I gave it headings.
Who I am
Im afraid I am not a snowflake by any definition. I am a straight white bloke, who identifies as a straight white bloke. My identity in this regard has never been a question for me, and I have never felt any inclination towards anything else, though for some reason I have found the majority of vocal LGBT people have never accepted this, they took my unwavering confidence to be a sign I was closeted and in denial and tried endlessly to convert me. I order "manly" drinks if I feel like it or "girly" drinks if I feel like it, I have had straight, gay, bisexual, pansexual, asexual and transgender friends and if I wasn't so terrible at keeping friendships going long distance I still would. Have I ever come onto a man? sure, he was a raging homophobe and his reaction was hilarious, I still laugh thinking about how his chair shot across the room from the speed he ran away, and that was 15 years ago. Have I ever wore makeup or a dress? no, but only because there has never been a good reason and I don't like showing off my legs (I also don't wear shorts).
Who you are (to me)
For me, whatever gender or identity you are, as long as its not bullshit and you dont throw it in people's faces, you go ahead and be you. By bullshit I mean plantgender or transage or anything else masking either mental illness or criminal levels of sexual perversion (Transage is what paedophiles all themselves). I have been called a homophobe for not enjoying a man wearing a dress draping himself off me and insisting he get off, but funnily enough, despite being straight, I didnt enjoy it primarily because I didnt know him and he came across kinda obnoxious and entitled, so even if I were gay, I would still ask him to get off. If a guy ever confessed to me I would be flattered, and let him down as gently as I could, and I have been attracted to and wanted to ask out an Asexual woman but I accepted who she was and more importantly, all reasons aside, she just wasnt into me, so that's that.
Oh, and I have a bisexual sister, and all that means to me is that the lucky woman has twice as many dating options as me, and we can both appreciate a beautiful redhead.
Gender
As far as I can see there are exactly 2 "Genders": Male and Female, there are physical, psychological, physiological, neurological and hormonal markers that define you as a "man" or a "woman", but like all things we all exist on a scale, like sliders on a colour pallet, our minds, our sexual desires, our bodies, our inclinations and our emotions all fall independently somewhere on a scale between "Absolute Man" and "Absolute Woman" we are all a mix, personally, all my sliders are strongly on the male side, hence my chosen identity, but the story doesn't stop there, no one facet of ourselves will develop entirely the same either, just because you are physically mostly male or female doesnt mean everything is the same, for me my body is largely male, but I have an annoyingly female fat distribution, when I put on weight it all goes to my hips -_- so all our "sliders" are subdivided into hundreds more, and where does that leave us? well, we all exist on a massive Nth dimensional colour pallet of almost innumerable facets that individually fall somewhere between male and female, making us all, on the whole, unique.
Gender Identity (Please read the "Gender" section first or it may make less sense)
As I mentioned, trying to pin a "male" or "female" label on people is mostly an approximation, and a lot of people are quite a varied a mix, and many people are "mostly female" in some regards and "mostly male" in others. Psychologically and Neurologically the female mind is more geared towards empathy and social development whilst the male mind is more geared towards special awareness and mechanical understanding (this has even been tested in wild animals, even ape girls go for the dolls and ape boys go for the trucks without any outside influence) but there was a show a while ago exploring gender on a scale and I still remember how this massive biker-looking dude, the manliest of men scored as "mostly female" with regards to empathetic development, more than many of the women on the show. So what do we do about our identities? Well what IS an identity? It is just a label we assign ourselves, a fully worked out view of who we are, so how many gender identities are there? as many as people care to create, if there is no pre-made gender identity our there that fits your particular mix, make your own, that's fine:
Homosexuality: Most sliders going one way and the "attraction" slider mostly going the other.
Transgender: Most sliders going one way and "physical development" slider going the other.
Bisexual: Most siders going one way and "attraction" falling somewhere in the middle meaning the can choose to go both ways.
Pansexual: The same as Bisexual, but with a different presentation, creating a more open nature towards your partners sexual identity, in essence, perhaps the most open kind of love, if you love someone, you love someone.
Agender: Physical sliders going one way or the other, but many of the psychological sliders all landing close to the middle.
I can go on, but what I'm saying is that no Gender Identity is right, wrong, natural or unnatural, its just the result of us trying to create a coherant self-image regarding a gender which so often fails to hit the "either or" that everyone is taught to believe in, does that make "Male" and "Female" gender identities any less valid? no, they are just one of the many Gender Identities, they just happen to be the most common, but I will say anyone who claims to BE absolutely male or female, not just identify as such, is wrong, the chances against that are astronomical considering how much variation there is.
Gender Purpose
Our gender does aim to be mostly on one side or the other, either Male or Female, as this is needed for procreation, and this causes the majority to be largely either "mostly male" or "mostly female" causing the misconception that gender is an "either or" thing and that everyone else is a freak or a mistake or some warped personal choice, (as the main human reaction to "otherness" is rejection), but this is not actually true, it is interesting to note that in the wild homosexuality and other gender variations are just as prevalent, and also interestingly, populations of social animals actually do BETTER if a small amount of their population is gay. The gay animals serve as surrogates for any orphaned babies, they skew the population towards strong adults rather than too many children, and since animals are less homophobic, a quick bit of consequence-less fun every now and then helps reduce population stress levels, there are evolutionary advantages to homosexuality which may explain its prevalence even in the human species (us being a social lot) meaning rather than a mistake, they are part of the Darwinian "Survival of the fittest" model, and though the homosexual animals don't produce kids (and so cant pass on their genes), the populations with a higher chance of producing homosexuals survived better so the genes for producing them also survived.
In our modern society we don't put as high a value on "survival" as we do social and financial achievement, and it has always been the different, the non-binaries, who have shown a stronger slant towards unconventional creation, art, literature, outside-the-box thinking even in traditionally "male" exploits like architecture or research, anything that gives you a fresh or uncommon perspective can be an asset in our culture, meaning, especially with the ability for artificial insemination and surrogates, the Darwinian model is only backing the LGBT community as the "fittest" precisely because they are different.