This guy asked me today why my car was running while I was fueling-up. I told him there was no reason to turn it off, it's just another unnecessary start-stop. Doesn't seem to hurt anything and I've done it for years on all of my BMW's.
Am I the only one that leaves the car running to add gas? I can't imagine, those of us living in colder climates have probably done this for years too...
It's more of a lazy factor for me in California though, plus I can see that the tank is full whilst I fill it.