"如果真有人类大同的那一天,一定是COMMUNISM"
Diversity is good thing when it comes to culture and custom and faith. But no matter what culture background one comes from, no matter what color his skin is, his heart longs for the same thing as others: that is freedom and liberty.
Why America is so attractive is that it offers exactly what a heart wants.
Given a choice, I believe most of Chinese will choose to come and live in America. It is not because they enjoy western culture(in fact they do not) but because America does not care where you come from and offer the best opportunity for people. That includes employment, social welfare and justice equality.