@Linkat,
I don't see humans as innately cruel either
Humans are animals. We weren't put in current form by so omniscient creator. We evolved from earlier forms just like any other animal, and are just as much products of evolution and instinct as any other creature.
When you read Jane Goodall and other talking about Chimapanzees waging war on each other, it is hard to not connect their behavior with similar human actions in war. Chimapanzees kill children of their eneies with glee, they celebrate bloodshed, they take and kill prisoners.
Chimpanzees are among our closest genetic relatives. I have difficulty the moral difference between Chimpanzee violence and similar behavior from their Human primate cousins. (I accept that humans now have the ability for symbolic thought... although this is a spectrum rather than a clear line).
I have trouble believing that Orcas hunting for sport is very much different than humans. The orcas clearly enjoy the activity, I imagine that the orcas get the same adreniline rush and sense of pleasure that humans get. Humans should know better.... but the reasons for hunting for sport are likely the same. There is something instinctively pleasurable in hunting and killing things. That is why people do it, same for humans as it is for any other creature.
Humans like hunting for sport because there was an evolutionary advantage to developing this trait.
Every animal is working to expand its territory. Many animals, including humans, kill member of their own species to ensure the spread of their own genes or control territory and resources. Every animal, including human beings, is strongly influenced by instincts that have been developed over millions of years of evolution.
Human beings are unique in that we have developed symbolic thinking and the ability to develop concepts like right and wrong. I think that makes human beings special, and sure, it means we have to go through this period of development as we face our innate instincts to form ourselves into something better.
I don't accept that humans are evil.