Yes indeed. But still, nobody is building residential neighborhoods on the top of the Everest or in the middle of Antarctica. Exploring for the sake of it is indeed a human instinct. The idea that we should build settlements for people who would live there permanently is plain silly. We have the obsession of repeating the Age of Discovery- but people should get the difference between discovering the Americas, with their wealth of plants, animals, land and waters, and settling a planet where there isn't a sign of life, not even air to breathe.