Have you ever been to New York City? 
I have! I visited Manhattan - the densest borough of NYC. 
I have never been to New York City. I don't think I would like to visit it either.
I don't blame you. With a population of over 8 million people, it is very very crowded wherever you go.
I have heard it is very dirty also. I also know that everything is very expensive.
It is. I would even go so far to say that is dirtier than Dirty Harry from the 1971 action crime film.