I was studying International Relations at Columbia when 9/11 happened, and it made me want understand the security dynamics of the world. I had been more focused on soft power issues - understanding different cultures and such - but once 9/11 happened, I felt like I didn't know anything about security problems.
If you go back far enough and get a wider enough picture of history, we have let go of many things that follow a religious narrative. We don't burn witches anymore. Most people would consider that barbaric. We don't sacrifice human beings, which was a religious act practiced by numerous cultures on this planet.