Well,
Satan does not exist as in molecules and atoms (although these are just philosophical/scientific devices anyhow) but Satan is the universal form of disobedience. All humans can and will relate to this myth i.e. it is a credible as a scientific experiment and it does have meaning - moreso that the former.
I will now proceed. If you take the side of Satan then you are choosing Narcissus and also Prometheus.
Both the mortal and Titan were fine examples of creation, however, they were vain and sneaky, respectively. It goes against ethics to be either, and hence, both entities were punished.
In the judeo-christian tradition, the punishment was grievously dealt. Satan is permanently separated from God. This must be agonising. Taking pity on Satan takes pleasure in refutation. We all feel this at times. Satan must confront his separation from paradise (this also does not exist in reality but is a place in our mind). This universe is half reality, half mind. Before the universe at present was created, whether we explain it with God = 7 days (relevant) or from singularity to now = 4 bya (less relevant to every day life) - big numbers are like monsters, they howl in our minds and have little reference. This separation happened prior to created order; hence, Satan has no place before God and as humans we should accept that this is God's matter.
Pity is much easier than judgement as it stimulates the liver reflex - our reptilian brains are stronger than the cerebellum Vs. cerebral cortex - and this is why Zeus extracted the liver of Prometheus daily. That self consuming feeling derived out of pity comes from deep within ourselves - mythology is the science of the reptilian, non-conscious brain (for some reason people need to have this explained to them these days, they just can't accept the power of stories).
Judgement, and I mean real judgement (not prejudice - this is another story) comes from the heart ... our most precious mind. The ancients believed that thoughts and decisions came from the heart. The brain was of little relevance ... a bit like the 4 billion years or whatever we have calculated the age of the universe to be. It is of little relevance. What is important is that you use your heart rather than your liver and this is the way of God.
Notes: space occupies most of the universe yet it has no physical property … does this mean it is a place of mind also? Indeed. The same can be said of myths, they resound clearly of nature yet resemble little of this world.
Thank you for your Religion/mythology related question.