I'm American, and I think Americans are pretty friendly. Some places are more hectic than others, but we value nice people, we can start conversations with strangers, a lot of people smile at each other, and we often help people out when they're in need. I have lived in Saudi Arabia and Japan before and traveled a lot for work trips so I kind of have an idea of what other places are like. In Saudi Arabia for example, people generally just mind their own business and things and come off as a little bit cold sometimes in their interactions. In Japan it was even worse, I would see random people getting physically pushed, spit at, rammed into, etc by strangers on the street. I even saw people a couple times very nonchalantly try to push others off of subway platforms. So I'm very thankful that I was born in America and in a relatively nice area. I honestly think after living abroad that most people are in fact rather "not nice" as you say. In America, places like NY and L.A. are also kind of like that, but still have quite a few people who try to be considerate and patient and kind. I hope we never become like some other countries.