I know I myself am no angel, but in general, why are human beings so awful, rude, and just overall horrible?

The title really... I know I myself am not better than other people, but either way, each and every single day I lose more and more faith in both myself and others, and just all of humanity in general...

People just continue to disappoint and disappoint... when I think humanity can't reach a new low, they always do...

Everyone really just looks out for themselves, but don't give a shit about others... they only do stuff for their own benefit...

And they only accept people who are EXACTLY like them... same sex/gender, same race, same skin color, same interests, same music taste, same taste in food, same fashion sense, and so on and so forth...

It's one of the biggest reasons I'm so bipolar and depression... but what the fuck else can I do anyway?

I know I myself am no angel, but in general, why are human beings so awful, rude, and just overall horrible?
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