People living in big cities

I've lived in a large coastal city for almost twenty years. I think I'm actually more patient than before, because you just have to go with the flow sometimes. But I'm definitely less trusting and friendly to strangers. I don't make eye contact with people in general, unless I know them, and I do my best to avoid prolonged interactions with people I don't know well, due to there being so many scammers and mentally ill people out there. I know this sounds like MARY! but anyone who lives in a city will understand what I mean. When I visit family living in towns and small cities, I'm surprised at the prolonged eye contact that is more common there, and the propensity for chit chat and small talk between strangers. It's nice, but it wouldn't always be the best idea in a big city.

It depends on the city. People in New York and Chicago always seemed obnoxious and aggressive. In Seattle, I found that people were generally more chill.

I would say the opposite is true. In big cities you can't be a massive asshole who is really impatient with other people because then you will spend all your time getting into pointless confrontations and eventually die of a rage heart attack. You have to be minimally polite and train yourself to not be annoyed by other people.