Im staying out of the question about human morals, but as far as where the elements came from:
If you subscribe to the big bang theory, then an instant after the universe was created, it was literally a sea of protons, neutrons, electrons and anti-particles. These particles moved at incredibly high speeds, so high that they actually fused together upon impac, much like what we do in a very small scale with out particle accelerators nowadays. These lumps of neutrons slowly decayed into protons, attracted electrons (negitive charged particles to counter the protons positive charge) and became the heavier elements that we see in abundandce on Earth. This actually happens on a very small scale when a star explodes in a supernove (the heat mimics the early universe here and some heavy elements are created) If you look at the precent of elements in out know universe, the numbers support this theory.
Light elements are small and take only 1 or 2 collisions of neutrons to create, so we see these in vast abundance. they make up stars, gas clouds and much of you in fact. Heavier elements are rare, mostly found in secondary star systems, where the heavy elements encapsled in stars has been thrown off by a supernova and reammassed into planets.
In short, thats where most of the elements came from. But I agree, as for where the singularity came from that released all these particles, thats anyones guess. We just dont have any scientific evidence to say anything about that. Neither does ID.