Living abroad (not just taking a vacation in another country) is a great experience. One learns about another country, its customs, culture, & language. One learns to see one's own country from a different point of view. One sees that people are much the same everywhere, with similar concerns. One finds that other places are not better or worse than home, just different. And upon returning home, one appreciates one's native country all the more. (click title for more info)
After spending several years in South America, I learned to love the culture there, made wonderful friends, learned a new language. Living without electricity or running water certainly made me appreciate home, yet it made me see that people can be happy with so much less than one would expect.