Why do crews not work together regularly?

Why do crews not work together regularly?

Ian Pullin (Retired British Airways Pilot) gives expert video advice on: How much can a successful airline pilot earn?; Do you sleep on a very long flight?; What happens if a passenger becomes seriously ill in mid air? and more...

They become stale. For the amount of flying that we do in three days, flying in short, you could do ten landings and then do another two days. You could do fourteen landings in five days, and then you have a couple of days off. You might do six days and have a couple of days off, so you're talking of fourteen landings, eighteen landings repeated through 28 days. It's a lot of very intense flying and you could become stale, whereas the air force don't do that number of sorties with their crew type aircraft.