Agreed. There's a reason they've always been depicted as dirty and not ideal (compared to living out in the country) even when other factors didn't make them negative as well. Like even before they were a breeding ground for "diversity" and "wokeism" like, let's say old england, most historical depictions of them are still negative. 

The architecture used to be nice though. 

 @Tally-wa  

Even just on a basic level, the idea of concentrating humans makes little sense to me.

More waste, less of a buffer to absorb it, and of course, anonymity which makes people treat each other like used Kleenex. 

 On your last point especially....city people are so rude to complete strangers. It's not healthy or normal tbh. I always wondered why but anonymity is a great point.