I do understand skepticism toward inevitable advances though, and I do think this one is inevitable. Before the train was invented, nobody had ever traveled faster than a horse could take them. When trains were in their infancy, many people, even doctors, thought that the g forces created by moving that quickly would kill a human being. Within 100 or so years, we went from nobody ever, in the history of mankind, traveling faster than 30 mph, to people traveling to space at 18,000 mph. When the ball gets rolling on something like this, it often moves much quicker than most people imagined.