Satan, the word sounds rather disgusting to those whose minds are preoccupied with some ideas they have through others or reading the Bible.
Satan is in point of fact a freedom seeker and does not want to submit to the tyranny of God.
In fact God wants that all submit to his command, Satan, uncommon and un-submissive launched a number of raids and did not want to coordinate with God. He therefore raised or inspired his legions seeking distinct space for them.
In today's world also if any freedom fighters set themselves against the tyranny of their rulers they will be exiled.
Satan is in everyone of us, inherently, and we do not become explicit dreading the unthinkable.
Do not take Satan differently. He is like all of us who want a self chosen government and he does not want any dictator to govern over us.
God is a traditional ruler. He had succeeded in programming the minds of his subjects that he is almighty and that he is the creator of everything.
Yes every religion has a god and devil too.