...my Indian colleagues could easily describe their culture, while I could not describe mine, except in terms of making money.
Most people of color have easily identifiable cultures. And most of those cultures involve being conquered by white men. White men, on the other hand, have only ever been conquered by other white men.
We white Americans left our culture in Europe, traded our religious and tribal cultures for a Middle Eastern variety, and perfected the worship of money. We have no real connection to the land, few blood ties, and we rattle around in our own heads with no real connection to humanity.
Our "culture" is far too young to really be called that because culture requires a connection to the world we live in.
Or perhaps ours is a culture of conquerers with nothing left to conquer.