I always liked diving and two years ago we started doing it from bridges into rivers in my hometown (~10m height) and later went on a little holiday and jumped from heights up to 20m. I never thought, this was a big deal, even though some friends and family thought so. This video really gave me some perspective,(reply>), I've seen video of diving competitions using the concrete roof of a harborside building as a diving platform.  Clearly less wobbly than this service walkway for changing light bulbs.