I don't think any man in my family uses the emergency brake. I always do, and get "laughed at." Years ago I let my nephew use my car while his was being fixed. He parked it in the driveway and came in for a minute. When he left, he yelled, "Where's the car?" I was sure he was kidding, but there was no car in the driveway.
He had left it in park, and it took a driverless ride down the driveway, acrross the road, through the neighbor's farm fencing, down her hill, and finally stopped when the open door got caught on something... a tree, I believe.
My husband and nephew got the car out (it went to car heaven....) and immediately fixed the farm fencing that had been knocked over. However, the neighbor wanted a professional job, even though it was better than it had been, new, and very secure. "I guess I'm just the helpless victim," she said. And as casually as I could, I said, "Well....I lost my car....."
Always use your emergency brake, everyone!