Sin, war, violence, hate, evil, famine, disease, poverty, pollution and more things exist in our world.
As a collective, we humans could take actions, but instead of fixing our problems, we either mess up any solutions that are found, don't use solutions at all, or dig our holes deeper. Humans need to wake up and smell the coffee, and maybe get a new cup.
There have been those throughout history that have claimed that something was set in stone, that it was going to happen. Commonly, these people have been proven wrong frequently. Anyone that claims that something is doomed to happen is making a claim that simply can't be proven, and that it should therefore be discarded.