Biggest travel regrets? Apart from never having had a chance to fly on the Concorde, seems a common regret of many people here! But at least I had some flights into the old HK airport, what a buzz that approach was!
I'll submit my biggest regret as having earned a MASSIVE amount of Ansett points on a Westpac credit card during a few years early in my career when I was in a very high-paid consulting position and doing not just a lot of domestic travel but also lots of expenses and they all went on the card. So the points are piling up, I think to myself "Yeah I should do something with them when I am not so busy, maybe cash them in on some overseas trips with SQ". Then of course seemingly without warning Ansett collapses and my points are frozen and then worthless. Hundreds of thousands of them wiped out overnight.