Hi Ben,
As I am not a boy, and I don't feel wholly a girl, then what am I, was the question that was key for me. Yes, there are strong feminine traits, but then there are the 'neither' traits as well - yes, one gift that makes me shake my head in bemusement or shame, whenever men are around being, well, men.
This was explored in the thread
https://www.susans.org/forums/index.php/topic,234349.0.htmlThis my description of my understanding of non-binary space from that thread - it helped me work out what labels best describe me.
We are all familiar with the sliding scale between male and female - but there are three other spectrums to deal with - sense of gender, from highly gendered to none; number of genders experienced, from poly gender, via bi gender and single gender to none; and finally gender rigidity - fluid through to rigid
So for you, Ben, your gender is male, (one gender, assumed from your name, apologies if I'm wrong

), rigid and highly gendered - a standard male configuration
For me, however, my genders are neutrois and feminine (bi-gender), rigid and moderately gendered - a neutrois- demigirl a non binary configuration.
The reason why we need those extra labels is quite simply validation, acceptance and understanding.
We are not 'everything else that we can't describe' nondescript group of those who don't fit the existing labels. So we have had to create our own labels to try to fill in the gaps, so that we can feel that we are being the best reflection we can of our gender, and yes over time those labels will change a little, as they are used and become more commonplace and established, and hopefully will start to settle on common understood terms.
It's like trying to describe a philips, posidrive, Roberts, torx, machine, or slot head screw ... yes they are all screws, however, there are very real differences between them, and so it is with our sense of our gender.
Welcome to Susan's, feel free to explore, and ask questions, but beware research tends to lead to self questions and are you ready for the answers. To paraphrase. Welcome Alice, to the Rabbit hole. *twinkle*
Rowan