Read the Bible. No, I mean read it like it is the Chronicles of Narnia,, Lord of the Rings, Game of Thrones.. We are sharing this planet with non humans and human hybrids. Not everyone (thing?) on this earth is able to enter Heaven. The atrocities you speak of are some of the reasons the Bible says Jesus returns with the armies - plural - of Heaven, with a sword, his white robe stained with blood, to kill this evil. He sounds a wee bit ticked off too, because it says the blood spilled will run as high as a horses bridle. Is this a rabbit hole too far for you? The podcast Blurry Creatures discusses this. Step into the blurryverse if you dare...