I agree. One of the great things is meeting and interacting with you fellow travelers. You may or may not have the same people at your table for breakfast that you had met the night before at dinner. And you may or may not meet the same people in the lounge car at different times. On a plane, while sitting in seat 22-A, you may talk to the person in seat 22-B, but I doubt you would talk to the person in 19-A or 26-E! And in a car, unless you stop, you would not talk to the people in the other cars (except for cutting you off, etc...)!