American here, currently sitting in the AFT cafeteria of a Norwegian cruise ship just off the coast of France. Saved for years to go on this once in a lifetime cruise.

I grew up on the edge of poor. Had basics and never went hungry, but our summer vacations were camping because it was cheap. Never went to Disneyland until I was in the Army and could afford it myself.

While I agree that going abroad is definitely eye opening, even traveling to other states increases your open-mindedness. I joined the Army and was stationed in Alabama, Georgia, Alaska and Washington. Going back home and reuniting with friends who never left the state or even left the general area was kind of shocking. Never being exposed to an even slightly different environment really showed in their attitude.

While I was in the Army, I was sent to Missouri and a couple of other states I can't remember right now for a month or so for training or field problems, and short trips show how even though I was still in the same country, there were definitely societal, geographical and political differences in each place.

Expanding that to traveling other countries was also eye opening. The Army sent me to Thailand for a month. My current job sent me to Australia and S. Korea and a couple of other states for 2-3 weeks at a time. I liked hitting the tourist spots, but I really enjoyed just watching people wherever I am. Once you see that (for the most part) people are people, you start to get that just because someone's idea is different than yours, doesn't mean it's wrong, it's just different.