I dunno, I tend to think that this does serve a greater purpose.
You see in the nature of natural selection and evolution Well we have come very far as a species in the greater scheme of things. We are no longer threatened by winter and we no longer run from the lions. The process that culls the weak and stupid from the great herd is no longer there. Leading to a weakening of the gene pool when they are not "removed" in some way. Obviously something has to take up this very valuable position and maintain the process. Well nature is a bite more clever than we realize. And has devised something new to take care of the species and ensure natural selection so that we may continue to exist on this world. And that new method is backyard wrestling.
Nature understands us a lot more than we do it. So natural instincts like "Hey that Ray Mysterio guy is cool, Imma go out back on my trampoline and try them moves with my neighbor!" are implanted deep in the minds of some individuals. They are instinctively drawn out back to try these moves (often while inebriated in some way) without any small amount of training or even understanding of how they are performed. So they will eventually injure themselves, and maybe injure parts of them that guarantees that they are no longer capable of reproducing, there are a lot of aluminum bars on trampolines and a lot of strange holds in wrestling. Thus ensuring that we as a species will not have the threat of future generations of trampoline wrasslers inciting our eventual downfall.
Take another look at the video and then ask yourself, "What great benefit will these guys and their future progeny bring to mankind one day?" So yes, the world needs backyard wrestling.