You really are quite rude.
Its not just the chaps who sit in row one of the people / cargo / weapons taxi's. Others area's of the service are haemorrhaging too.
If they are haemorrhaging so much then surely they would be offered incentives to stay - it has happened to other trades in the RN (Submariners, Marine engineers etc), so ask yourself why not in the RAF? Don't vent your spleen at me - if I am thinking of leaving, a bit of dosh to stay in is money well spent to them - it would save them millions in retraining someone else.
Simple fact is it costs a shed load to train aircrew, unlike costing a shed load to train other branches.
Oggin