I find travel shows an interesting genre. They make you feel like an explorer. Finding new places, people, religions, rituals and ruins of some past civilizations. As a genre this is quite different from the others. It seems to speak to a whole different side of the mind. The hero of the story isn't a hero in the traditional way. He isn't on the journey for anything, there usually is no task to fulfill. He's on the journey for the journey. He just wants to see the world.
I think many of the people will agree that they become nostalgic when thinking about their childhood. There was some freedom there that is hard to find in the cold world of the grown-ups. In fact, that was the time of least freedom you ever had, except for one thing. You were free to explore, since you could see everything for the first time.
And now, since there isn't anything new, where do you go? To Laos, or some other conveniently unknown place, and you have an adventure there. But not an adventure of a hero, but an adventure of a child. This is why some people would like to live on a different, more modest era. They need the unknown, it is what keeps things interesting.
This is a dangerous thing too, because the more we make the society safe and the world more known, the more there will be people who would rather destroy the system than live with the boredom of nearly certain future.