I believe that over the years I have developed an understanding of the central idea that makes America great, and I have seen the greatness of America reflected in my life. At the same time I take seriously the issues raised by the critics of America. I know that they are on to something as well. In recent years my enthusiasm about America has been shaken by the experience of parenthood. As the father of a seven-year-old girl, I have come to realize how much more difficult it is to raise her well in America than it would be for me and my wife to raise her in India. We are constantly battling to shield our daughter from toxic influences in American culture that threaten to destroy her innocence. And even as I seek to insulate her from those influences, I am not sure that I can. This is a battle that I know I might lose. Why, I sometimes ask myself, do I stay in America?
All generalisations are false, including the one I hold in my mind after reading this. ;)
If you will read the entire chapter you quoted, you will see it ends with an eloquent explanation of why, despite the dangers inherent to liberty, D'Sousa has concluded America is the best place on earth for him to raise that daughter.