I don't want to watch a video of people succeeding at stuff, I want to watch videos of people failing in epic, painful ways! Much more entertaining.
Some of them are so obviously fake/set up though.
I don't mind some of the win videos when they're accidents that could have turned out tragically but magically turn out ok. Like those ones you see on icy roads where the car spins out, does a 360 and ends up in the path of a truck only to lose it again and skate right around the truck, narrowly missing it. People throwing pennies into cups, however, is boring as bat shit.