i watched a piece on the news recently, the divers, or what passes for someone throwing themselves off a sheer cliff was far worse than this.
Like base jumping, totally mad. Some people are thrill junkies and the more dangerous the jump the more they love it.
Some loon did a jump off the top of The Shard here in London, which is quite insane. Don't know how he managed to evade security, this was before it officially opened.