To me the existence of life certainly is such a horrific, tragic mistake, the tragedy lies in the fact that all of this was so unnecessary, there really should just be nothingness instead. I see existence as being a nightmare, it's an impermanent disturbance in what would otherwise be the perfect state of not-being, but I very strongly believe that we return to the ideal state once we are free from the nightmarish burden that is existing. Existence is just an unfortunate consequence of evolution, and it's so disturbing the amount of senseless torture and cruelty that has been experienced all throughout history and will continue to in the future, it's honestly way beyond comprehension. I see it as being irrational to see this state of existence as being desirable, this world truly is hell.