I can't really relate to the idea of loving to watch people struggling and failing, at all. I don't even know what that means. But I do know that vindictiveness and hatred, perhaps cruelty too, are negative qualities simply inherent in a good portion of any given population. They're human traits present in many people to varying degrees. So, those negative qualities shared by loads of people ie., a 'society' may lie at the root of the problem, I think. People delight in their own evil, you might say.