Do you turn off your engine at the gas station?

I keep it running mostly to just keep it comfortable in the cab and wear and tear... When I'm towing the trailer its always running till we either stop for food or reach our destination...Most fuel stations I'm at are busy and have vehicles running all around me either pulling in or pulling out so I don't see any benefit to me shutting mine off... I will admit I'm always at the nozzle when fueling which to me is more important...