The fact is that most of the people want that other wants, everybody wants to live in this city because we are induced by ads, movies and popular opinion that New York is the seventh wonder of the world. You might ever saw a hollywood movie and think wow I dream with live the New York life.

Once the people makes their dream reality(pre-configured by public opinion I though), get a job and move to New York, most of people aren´t able to see cases that they will live in some cases worse that in their old homes, but that doesn´t matter they are living the New York.
I think that doesn´t means that New York is not one of the greatest city of the world but the opinion has build an overrated image of NYC.