You might find the following article relevant and of interest since it is about one's character and the brain;
Everyone's different: what parts of the brain make our personalities so unique?
Also this
A Brain Scan Can Tell A Lot About Your Personality And Intelligence; It's As Unique As Fingerprint
Blind religious assertion, animals are also wired for fight or flight and other irrational brain processes.
Different parts of the brain are wired for different functions, I see nothing paradoxical about that.
All of this is blind religious assertion.
It overlooks that the purely material aspects of man are part of nature. It overlooks that although morality is more primitive in other species it still exists at a more primitive level. For example see the article titled "Evolutionary Origins of Morality: Insights From Non-human Primates";
Evolutionary Origins of Morality: Insights From Non-human Primates
As to your assertion that genocide and similar attrocities do not occur in nature, see this article from the LA times which states;
"Genocide, according to Jared Diamond, a research biologist at UCLA, is a behavior that
Homo sapiens shares with the other primates, notably with the two extant species of chimpanzee. Attested in several other species, genocide is particularly well-documented among primates. Field research has shown clearly that bands of chimps exterminate rival bands down to the last member. As for the normality of genocide in humans, its empirical frequency--Diamond counts 17 attested occurrences between 1950 and 1990 alone--is disturbing confirmation that, in this of all instances, the immoral is not unnatural."
Source;
Genocide and Genes : A 'natural' action may be atrociously immoral, too
In my opinion.