To the original question ..
..I can only answer for my own experiences.
For myself I have a sharp tendency to treat people as they treat me or my own.
Good and bad become conditional.
I have met people over the years that I work hard to be similar to, just great people to know and be around.
Almost every single con attendee I have met over the decades, f'rinstance
There are also some that ..if they got hit by a bus in front of me,
..I may just break out in laughter while wiping bits off my shirt.
Even further ..if I saw the bus coming and could warn them .. -shakes head- .. I would not.
My sister-in-law Karen, f'rinstance .. grrr.
-GE aka Frank