Well, by this logic one could say that nobody wants interplanetary travel. I mean, heck, only a few people have ever been to outer space - the vast majority hav

Well, by this logic one could say that nobody wants interplanetary travel. I mean, heck, only a few people have ever been to outer space - the vast majority have spent their entire lives here on Earth - so, therefore nobody must be interested. You're forgetting that it's illegal to build dense walkable cities in much of the country. And, like others have pointed out, few people are actually free to move to exactly the kind of place where they would ideally like to live. Past and current behavior is not always a good indicator of underlying desires.