As a passenger in a commercial jetliner that was circling the airport again and again, have you worried that it might run out of fuel?

Yes.  I've been in that pattern for over an hour at the Atlanta airport.  I hate to fly; hate everything about it!

No, not really. Aviation accidents due to inadequate fuel are very very rare.

I do recall one time, while flying into Honolulu airport, I looked out a window and thought, "Gee, we're AWFULLY low." Within seconds of having the  thought, I heard the engines increase power and the pilot directed the plane to higher altitude. That's probably the only time I've been noticably scared during a flight.

I've only been on one trip in my life where I was on a plane and that was when I went to Germany. It was two flights each way but none of them circled the airport so I wasn't thinking about it.

All my other trips were driving trips.

Wanted it too so we would land to get some.