I don't miss flying all over the world at all. The thrill of international travel wears very thin after years of staying in hotels that you arrive at after dark and leave before the sun comes up
When you do arrive in time for dinner you eat on your own while dealing with phone calls from clients and the company. (U.S. based so they're 6 or so hours behind)
Working in Holland (local job my boss said) I was on first name terms with the KLM flight attendants
Good experience but very wearing.
Happy now to just have a thirty mile commute each way to a fixed site