Believe in the existence and fear Satan, etc., but don’t worship. There’s a big difference.
Satan is our enemy, and yes he exists, but Christ said I give you power over your enemies. Not even the pigs wanted his (satan's) fellow travelers dwelling within them. Satan is not just the appearance and personification of evil, he is a transforming light and he was created in the full pattern of beauty. Satan knows Scripture better than any flesh being on this earth and he knows the nature of flesh man. Look what he tempted Christ with, that took place so as to warn us what is MO is. My earthly analogy is how Hollywood is the beauty of the beast of liberalism... seductive.