Truth, Reality, Atheism

We all experience the fundamental reality of the world itself, regardless of our truth claims, and regardless of whether we are atheists or not or thoughtful or not. Slaughtering innocents is repulsive to us because we are made in God's image. Suppose someone were to say, "No, that is how we evolved." Fine, but then there is no compelling reason to embrace the repulsion now, since we have "evolved" into reflective beings who are able to overcome such repulsions through reason. This leads to the problem of inconsistency, not for the Christian (our ?problem? is mystery, not inconsistency), but for the atheist, who wants to say that slaughtering innocents is ?wrong,? but knows that evolution cannot support such a claim. The inconsistency itself is not a problem for the atheist, because inconsistency is not evolutionarily bad; but on the other hand it is a problem, because to make an argument is to claim consistency. ?But evolution is true!? Again, where is the concept of truth for the atheistic evolutionist? It has value only insofar as it helps us to survive, but there are plenty of falsehoods that can help just as much or more than the truth does, so the concept of truth cannot be a virtue to the atheist, and to argue for it is disingenuous.