Many if not all of you will work and live outside of the US at some point in your careers. Businesses and jobs are internationalizing as we speak almost all jobs, not just the fancy ones. You guys are the people that are going to be running the world. I'm just a dude teaching here at Virginia Tech. Make no mistake about it, the AIDS rate in Africa DOES affect you, the increasing coal consumption in China DOES affect you, an earthquake in Japan, and the price of cocaine leaves in Colombia DOES affect you.
Globalization is pretty much a one-way street.
We are not going back to medieval times, no matter what isolationist say, do, or think. Ignore the rest of the world at your own peril you wont be hurting anyone but yourself. Knowledge is power, or at least empowerment. The more you know about the world in which we live, the more power you have. Geography is one of the most fundamental sciences, a discipline awakened and informed by a long-standing human curiosity about our surroundings and the world environment.