I understand your logic, but if you don't challenge the Luftwaffe in France their aircraft can go elsewhere, like Malta & North Africa. As far as logistics are concerned it's easier to support an air offensive based in England than from bases where everything has to be shipped into first. Besides France had many strategic targets that needed to be hit, including naval forces involved in the Battle of the Atlantic.I clearly don't get it at all. To my mind this was the RAF needing to do something to justify their very resource hungry expanding air force. The flights over France started well before any German invasion of Russia, with little strategic value to me, they were just going, looking for trouble. I know shipping was a major problem, but some of these wasted resources could have been better used in Malta and North Africa.