I have always viewed myself as a bad person. I find it very easy to pick out people from history or from the media and label them as 'good' or 'bad', too. But I struggle a lot with deciding whether people whom I know in person, people whom I know well, for better or for worse, are themselves 'good' or 'bad' people. That struggle is an indicator of how difficult it is to boil something as complex as a human being into a tiny box of a single, all-encompassing word.
Despite that, I maintain that I am a bad person. Bad in a sense of societal expectations: I don't contribute to society, financially or otherwise. Bad in a sense of morals and ethics: I am selfish to an excessive degree, and this defines all aspects of my existence. And bad in the sense that if anyone ever did 'design' humans back in some nebulous time of beginning, they'd definitely take me back and try to claim some sort of warranty for defects.
Psychologists and psychiatrists alike in the past have tried to dissect this certainty that I am bad against the inability to label others as such. They can fuck off.