I have known quite a few airline pilots, or ones that have retired. One is a retired DC10 Captain (BA/BCal) who said he was glad to be retired. When I asked him why, I thought it was because he didn't like the company. That was not the reason. As he put it, the job of flying the plane was "...absolutely mind-numbingly diddlying boring. We used to have to twiddle a few knobs, but we don't do that any more - the knobs twiddle themselves". This gentleman used to have a race with his co-pilot to see how quickly each of them could finish the Telegraph crossword. Flying to/from the US, they would have a quick check round as they crossed every tenth meridian, and then carry on with the crossword. After solving 1 across, the captain told me he would think "nearly there - only another 9½ hours to go..."