That's what I was responding to.
And I agree, their lives were changed for the better, no doubt in my mind. But it wasn't pride that they received. It instilled a sense of purpose and service in them. And it showed them first hand how most of the world lives. They appreciate their own situation in a profoundly different way when they return. They also have an understanding of what God expects of them in regards to other people.
And yes, my wife and I were worried, but some trips are worth the risk.
When I was 15, I did three weeks in Europe. Three of the most fascinating weeks of my life. I don't regret it and neither do my parents.