Y'know, I think I'm OK with this sort of stuff.
Like honestly? They're really modern day daredevils. A bunch of little Evel Knievels, let me tell you. They deserve our respect, our gratitude, not our scorn! They are the bold, brash, risk takers who put it all on the line to perform for us. They perform for us on the substantial chance they'll fuck it up and go careening into the canyon, thus giving us all a little moment of joy. Joy at the thought that one less stupid person will be reproducing.
God bless you noble bastards, for sacrificing yourselves in such reckless fashions*, to the merriment of all!
* Basically any of these stupid "challenge" memes that come with the risk of serious injury or death.
PS It's the same reason why anyone watches nascar too.