I wouldn't be into this either. Flying around and checking other things out whilst keeping your selected POV set is really handy. If camera coord's were copied every time you moved you'd more than likely lose the preferred POV that you've set for your scene and you'd be even unhappier/frustrated that you can't get it exactly the same again, unless you copied and saved the coord's you liked for the final POV.
I
always build my still scenes around my camera's POV, never the other way around.
The idea of having a POV check at render time(t
hat could be disabled in preferences) sounds good for those that forget to hit the camera button. It's second nature to me now so, I'm not really too fussed about it but I suppose it's a good idea.
Just remember to check that your set camera button is still
greyed out before hitting render, is the best advice.