steaming away

having followed a puff of steam for a while we parked by a bridge near Hellifield - the steam stayed still for 20mins or so as we got soaked stood on the bridge - patience was rewarded when the train finally passed through the bridge we were stood on and we were able to capture some blips!
why is it that a steam train evokes so many emotions? at the time l was glad to see them go and preferred the clean comfort of the diesels - but now l will stand on a bridge just waiting for one to pass!!