The human dislike of lies and the survival of the fittest.?

If humans evolved from evolutionism, natural selection and particularly survival of the fittest then y are lies still hurtful to humans. Even the most hardened atheist feels bad when he's lied to, especially by his wife or brother or loved one. The mes get angered when they r lied to. Even in Nigeria where everybody is surprised when a politician speaks the least truth we still feel hurt by the public lies. Lying has not ceased to be acceptable to humans no matter how rampant it has become. Yet lying is part of the survival of the fittest. No one excused Bush on grounds that he had to lie to get an edge, u dont excuse ur wife on she lied to u cus she had to sleep around. Yet we excuse carnivorous animals who kill just to survive. Does not this show that there is a higher moral Deity which is the Christ that was involved at the very beginin of human existence. Since this disgust at lies exist as a core essential of human whateva whateva, y'all get the point.