Fighter pilots' guts

Originally Posted by Smudger Smith

The aircraft left behind were left because the were write-off’s due to enemy action or mechanical failure, not because of the approach of the German Army. The RAF was not in the habit of leaving flyable aircraft for the enemy.

Did I ever say otherwise? Nevertheless there are circumstances in which you are forced to abandon even flyable aircraft : if there are not enough pilots at the moment to fly them all away. Such things did happen.
Non-flyable AC left behind were not all write-offs (these are wrecks actually and usually they were pushed into some remote corner). Many could perfectly well be repaired, perhaps in half an hour or within a day, or be refuelled, or get a new tyre. Sometimes there was no time for this. You don't seem to be aware of all the realities of war.