I don’t actually look upon sin as a metaphor. I would describe it more as in the context of my world view. The Christian world view has been that human beings are the crown of creation, and that all that was created; animals, plants etc, was for the enjoyment of man and for us to rule and navigate in lack of a better word. So as man fell, and was punished by death, everything created for our benefit was also punished by decay and death, and we would have to work harder for a good life on earth and to sustain ourselves.
This world view may be considered proud by some, that creation suffer because of man. To put ourselves on such a pedestal is for many hard to swallow, but it still doesn’t change the fact that everyone suffers and dies, and that even nature itself has natural hierarchy everywhere. How we interpret that suffering and hierarchy is up to us.
If a king provokes a nother king to war, the people suffer because of it. When gerbils attack and even eat the weaker members of the flock, there’s suffering. Does this explain away inherited sin caused by the fall of man? It doesn’t. If God exists, He obviously does not strive to eliminate death or suffering at all times in this world at least.
In a way, when David Icke, whom I really enjoy listening to, is not always mistaken when he describes this enormous consciousness, vibration, frequency he talks about. If God is infinite and eternal, how can we really describe Him at all from our own narrow perspective?
I still believe we are created to serve and worship God. Hierarchy is in everything. We are the crown of creation, but God is the ultimate high, and this is why I worship Him. If God became man and died to pay for our sins is of course a different discussion.
I am glad to hear that you have not given up on God as a concept. A world where everyone’s moral compass is solely derived from ourselves, will be a very harsh and selfish world.