Airline tickets, they used to be the foretaste of an adventure to come, now it’s a cat and mouse trial of gaming the baggage costs, finding a seat and the start of worrying about having forgotten some hidden details which means that you get rinsed for excess charges at 6am at the airport.
Oh, and the guilt that you really should be finding another way of travelling even though it would take 5 times longer and cost 3 times more