[FullMtlAlcoholc]

You seem to underestimate how annoying modern air travel is, at least in America. One has to stand in at least 3 different lines (baggage, security, boarding) before getting on the plane. Whether in the terminal or on the aircraft, the seating feels like it was designed to be as uncomfortable as possible.

I imagine that there will be people willing to travel via rocket just because of the 3+ G's. And I'd take a 30 minute roller coaster ride over a 10 hr first class flight any time, all the time. Less time spent flying > comfort while flying. One immediate benefit is that one doesn't have to take a week or more off of work for intercontinental travel. Weekend jaunts to Pattaya or the Alps are possible when you aren't spending 20+ hours in transit.