You are not alone. My dad had a bad habit of holding me up above railings “so I could see”, without prior warning: the Statue of Liberty (memory plays trick, but I think this was back when you could actually go into the crown); and, an ALLIGATOR FARM. My father was not a daredevil and I trusted him to hang on, but 55+ years on, my pulse rate has doubled while I type this.
I don’t get it. When my daughter was about 18 months, we took one of those Astro-lifts at Aquarena Springs. It went over a lagoon with alligators. It had bars all around, but I thought she might have been able to crawl through, so I held on to her so tight in that car my wife told me “She can’t breathe! Loosen up!” That was with her sitting on my lap. Can’t imagine a parent or grandparent deliberately dangling their kid.