Why, Human?

I don't get it. I just don't.

I don't get how people could 'fight' endlessly over something which I consider inessential.

Why do people complicate things which are supposed to be simple?

Well, if I could say in terms of 'individual differences', the values which people hold are not the same. 

Oh God sometimes I hate to think about individual differences because sometimes it's tiring to 'understand everyone'. It's funny that I become tired of people, of human, of their differences, which sometimes might justify everything that they do, even if it may harm or insult others. It's funny that I become tired of people when I'm already a Psychology student, learning what people do and say for almost three years. It's tiring to have a mindset that 'everyone is different' when the situations won't let me think that way. It's uncomfortable when what I'm do is incongruent with my values.

After all, I'm tired. I'm tired of understanding people. Or even worse, it can be that I just overestimate things around me. Thinking how people would feel, more than they actually feel. Sometimes, I envy those people who can do or say whatever they want without considering others. How does it feel like?