I still remember the pang of guilt when I bought my first "secular" album. I didn't grow up in a fundamentalist household, but I held myself to a high standard. In retrospect, it's funny. The Joshua Tree has more spiritual content than many of the Christian albums with which I grew up. But as I purchased that CD from my local Best Buy, I felt like I had crossed the Rubicon. I did not realize that I would find God on the other side.