Why is it that people are so stuck on there being just 'female' and 'male'?

Unfortunately, it's because of lack of education. People see black and white, it's one or the other. The thing people don't understand is that it's actually a spectrum, and that you can't change how you feel even if you tried

Some people just don't understand, and it doesn't nessicarily make them bad people. For example my parents are great and accepting with most things, but when it comes to gender identity they just don't understand and I don't know if they ever will fully. They think it's because of the media and influence with others that people are coming out as different genders. It's just hard for some people to understand and believe that gender and sex are two different things when they were brought up using the two words for the same definition. But when they start putting you down, telling you that you're wrong and you just "need to choose" they are honestly just not worth your time.

That's because that's just how they are. That's their belief and we need to respect that. I don't think it's called being 'stuck'. I don't think we should call them uneducated because they're not. We can't judge them for that.

Some people are very religious and go by the bible. I do not, and I am very use to saying they/them pronouns. But I think that since the reproduction system needs a male and female in order to work, I think that is why I think people are sick on male and female.

Because it's the 'norm' societies around the world think its normal . Lgbt people were literally alien few decades back but now people are more open minded

Humans like to categorize things, it's what we do. The world is becoming more accepting of everything in between though. It's a generational thing too I think. Such things that we are comfortable talking about now were never spoken of years ago. The world is definitely becoming more open-minded and we will get there. It will take some time, but it will all be okay.

Society has pushed since the beginning of time that there are two 'genders': "male" and "female". People are stuck on there being just 'female' and 'male' because it's the norm in society and a way to categorize people into gender specific boxes.

Cause that is the norm and it is already embedded into our heads. People prefer to leave in the norm then to accept something new, this is because new things scares them because they do not know what the outcome would be.

People find it much easier to relate to terms with clear borders - black and white, right and wrong, ying and yang. Once you introduce neuances of gray between the black and white, many people will protest the opening up of borders, the breaking down of easy into complicated. If you look around you will find this desire for easy categorizing in many aspects of our social lifes. And when it comes to gender and sexual questions, areas that is tainted with taboos and social stigmata, you will find the urge to hold on to known borders and limitations to be strong. Even those who break out of boxes defined by others, soon start to define their own boxes - how it is right or wrong to be transgender, for instance, how you should act or feel or appear as this or that. Some will use their religion to support their point of view, but likely it is broader than that; it seems to be a fear of people who challenge your perception of a world we all share, but at the same time feel some kind of personal and private ownership to.

People find it easier to understand if they can sort things into black and white categories. When something changes, or the categories start to expand, they panic because everything is not sorted into neat little boxes.