Spys do not win.
Not to be antagonistic about it,....
I look at it like this. If you want to fly bombers to a target and be guaranteed to get there without any enemy planes coming after you, then maybe you should go to the Training arena and play there. You cannot be shot down if you go there.
Now, I will ask, what is the real problem? Getting shot at is part of the game, regardless of how who is shooting you got there. This is a sincere question. I have no idea why anyone would get so worked up about being shot down, when they are perfectly capable of defending themselves.