The Pro-social Psychopath
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There was a podcast about this guy I listened to awhile back. Some of the shit he's pulled with his family members was outright creepy. Especially so because he saw no problem with it at all.
Interestingly, he said that because he has absolutely no inclination to treat people with dignity and respect, it's a huge emotional drain for him to try to act like others do. So the rule he's set for himself is that if something considered a good deed is too taxing, he doesn't do it.
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Presumably "pro-social psychopath" makes it easier for him to excuse himself than "asshole".