Of course, it all depends on your mindset. And once again, the significane of any type of measurement is in the eye of the beholder. I'm not really arguing this point, we actually agree here. I'm just giving my own viewpoint as to how I treated my K/D.
My mindset towards using K/D as a measurement: I flew to emulate MA conditions mostly. Very rarely did I take out the perked rides. I picked (defined as in killing an opponent who's engaged) but also fought when necessary or favorable. Once I had that above 1.0 and maintained it consistently landing 2-4 kill sorties in 190D9 and 109K4, I stopped caring and focused more on getting into fights and testing the limits.
Surprisingly, my K/D is still above 1.0 there.