Every time you catch yourself going, "Fuck, are humans just inherently evil and naturally inclined to selfishness and harm???" you HAVE to remember that that's literally a core ideal of Christianity.
So if it feels inescapable and like evidence of it is everywhere, whether at times or always, that might just because you're in a Western country where you're surrounded by Christians who believe that, fundamentally, in their worldview. And also they talk and make art about it all the time and run the vast majority of news outlets. And spent over a thousand years burning any art or texts that disagreed with them. Etc. etc.
If you're gonna come to as drastic and painful a conclusion as that, at least take the time first to make sure you're not working with biased evidence (surrounded by too many people and cultural products that believe original sin is real)
And if it turns out the feeling WAS partly the result of cultural Christianity, then hey, that's great news, because it means there's that much (and it really is SO MUCH) less evidence that humans inherently suck. Which is good, because we don't
