Entitlement

As I was waiting for my Geunius Bar appointment at Apple, I realized I was getting a little impatient. The word "entitlement" popped into my head. I looked around, and there were many people waiting to have their questions answered, their products serviced or purchased. Why did I have this feeling of, "I made an appointment. I was here on time. I have things to do."?

What breeds this concept of entitlement? American culture? The media? My selfishness?

Just some unfinished thoughts...