Friends, why do so many people want to go to the United States?

As far as our family is concerned, the first reason for going to the United States is to study. The United States has a low level of basic education, but it is a country that can support world-class higher education. My son received offers from two schools in the United Kingdom and the United States at the same time. After comprehensive consideration, he chose the American school and applied for a scholarship. From applying to schools to scholarships to applying to school buildings, emails sent to every teacher in the school received enthusiastic responses. After staying in the United States for a week, his feedback to us is that Americans, regardless of gender, are very warm and considerate, and have never encountered anyone who discriminates against people of different skin colors. When I bought milk tea at the airport, I couldn't find change. As a result, a white aunt wanted to give him a cup, but he was too embarrassed to ask for it. I went to another shop to buy something and then came back to buy something. The lady selling milk tea didn't take the money and just made it and gave it away. Give it to him; when he sees him holding a map, someone will come up to him and ask him if he needs help; when taking the elevator, even if everyone is inside, no one will press the door button manually, and it will close automatically until no more people come in. ; When entering a shopping mall, if the first person who opens the door sees someone following behind him, he will wait until everyone has entered before closing the door.