“Everybody has a secret world inside of them. All of the people of the world, I mean everybody. No matter how dull and boring they are on the outside, inside
them they've all got unimaginable, magnificent, wonderful, stupid, amazing worlds. Not just one world. Hundreds of them. Thousands maybe.” -Neil Gaiman
The worst is diagnosing others individually without a solid, checked, and validated foundation, purely based upon our own rationalizations. That's just Ti/Si nitpicking at its absolute worst. Or Ni tunnelvision. Or a Fe "us versus them" mentality. Or maybe inferior Te that misuses categorization schemes. I can't remember anymore.
Also: it turns out that I get an adrenaline rush and a huge sense of satisfaction from doing something about social and organizational problems--especially when it involves organizing the fuck out of people.