Why would any border guard be incredulous over anyone visiting far away places? You'd expect border guards to be used to meeting foreigners. And there's lots of foreign parts in the world.
Why would anyone visit X? Because it's there. Because people live there. Because there are things to see. What other reason do you need?
Why would anyone visit X? Because it's there. Because people live there. Because there are things to see. What other reason do you need?