Lets break it down to some different views on the idea
Freud believed in the concept that people had a human and animalistic side. We had three levels of cognition, the id, the ego and the super ego. The id represents the animalistic side of humans, essentially "kill kill kill mate mate mate eat eat eat". The Super ego represents the civil side and moral side of humanity, being polite, being nice and so forth. The ego represents the compromiser between the two, which decides to take some parts of the id and some parts of the super ego in order to establish what are actions and thoughts are. It's an interesting idea, and goes with a lot what you are saying, if people have that animalistic side does that make them animals? Although Freud's idea is shown to not support experimental analysis, it could be a way of developing your ideas with a more anamlistic idea.
The other idea is of course through evolution, the idea that primitive minds do exist in everyone because a human mind is a more advanced layer of a primates mind, which in itself is a more advanced layer of a reptile mind and so on. Our brains evolved from the inside out, the most simple processes are shared by even the most simple organisms, the more complex the processes of our brain are, however, the less species we have in common. It branches out but shows that at every human, the most basic processes are still animals. Essentially this is saying humans ARE animals
That goes on the animalistic debate but lets talk about the specific problems. There are a few things about difference that is important. One thing a lot of people like to think that they are different, in an abnormal way, that they are special. I believe the main reason for this is that people have high hopes, they see the people around them and see there unremarkable lives, they don't want an unremarkable life they want a remarkable life so they say they are different, they are not the same and won't live the same life. A lot of people do this, maybe not everyone, and maybe not most people I'm not sure, I can say for certain I do this though. But the question is if a lot of people do it, how different are they really? Perhaps we just WANT to feel different, and because of that we do feel different. Perhaps, we aren't different, and we truly are very similar, and our thoughts we perceive as different a lot of people have and are in truth, the same.
You say you ask questions that aren't normally asked, that's a good quality! Asking lots of questions is very important, it's what makes a good scientist or intellectual is someone who asks a lot of questions, about anything. So that's good! It sounds like you are curious, but more so you are progressing to a stage of self exploration which, believe it or not, a lot of people go through. Take a high school english class and the idea of self-exploration will probably be mentioned at least once (It's in a lot of popular culture). We are all different, yet we are all similar, different in some ways, similar in others, we share similar environments and similar genetic code, but each of those are different in subtle ways, which allows us to be different, yet similar.
It's late and I don't really know what I'm trying to explain because I'm not sure what you are wanting to be explained. But your last questions is a lack of answer about yourself, obviously we can't give you an answer. I mean, I believe a human is shaped by their genetics and environment, so to truly explain who you are in full detail you'd have to map your entire genetic structure and keep a record of every event that even slightly influenced you. So an answer in that regard is almost impossible, all we can do is make generalizations, but that's with the universe, science itself is simply a close approximation, no one can really know the absolute truth. So perhaps take this in mind, if you had the answer of why you were and you knew yourself in completely, then what mystery would there be? You would already know everything about yourself so there's nothing less to discover. Do you ask questions cause you want to know the answers, or because you want to discover the answers? Would you be happier in a universe that has unanswered questions or a universe that has everything perfectly answered? Mystery is a thrill, and by not knowing everything about yourself youy leave more of yourself to be explored. You constantly find out new things about yourself every day, whether it be something you enjoy that you didn't think about, or perhaps a limitation you didn't know. It's a continuing adventure and I personally wouldn't have it any other way.