There is more data, but competition is inherent in the struggle for existence, at every level. We have been able to abstract some of that away from human life because we have do thoroughly dominated all other life on this planet. If you have data to contradict this, I'm happy to look at it. It's very easy to say "higher order thinking" is unresolved data but one could say the emergence of higher order thinking is an advantage that gives the ability to so thoroughly dominate the world.

People do see it as natural law. Because most people understand that if you do good things, good things tend to happen in return, and bad things likewise. If you're a dick to everyone, you probably die because no one will help you when you get in trouble, if you're helpful to everyone it's the opposite. You can choose to believe that in a spiritual sense or not. I actually tend towards believing that in a spiritual sense and very strongly tend towards there being a Creator God, and Christ being a representative of Him. (Though I admit my faith is far from rock solid as I continually try to sort out the nature of all things, but all that aside). In the sense of debate I tend away from relying on that which cannot be observed.

Evil exists, perhaps. We have actions that we perceive as evil, but is it because we see the negative consequences that arise as a result of destructive behaviors or is it because of something higher? Even an animal knows not to touch something that burns it, and would probably consider that thing to be evil. Is the reason we see common morality throughout cultures because humans observe the same behaviors as being destructive, or is there a higher reason? I like to believe that the latter is true, but the concept of "evil" as behaviors we've recognized are destructive does not automatically imply there is free will, only that it is advantageous to avoid them. For what it's worth I do believe in free will, but that is a belief, it is not founded in logic and evidence that I can present