I don't think satan is real. quite possibly just some made up fictional character for all we know.
have you ever felt the flames of hell?
have you ever met anyone possessed by satan?
and if so how do you know that that is truly hell to even begin with, it might just be a dramatic chain of events, or just earthly fear.
Just because some book says you should believe it doesn't mean that it is valid, or truthful, it could simply mean that man has been fooled all along by this one book, and now that everyone is so wrapped up in it, it almost seems stupid not to believe.
but personally i think humans are stupid and ignorant so i dont believe in something that is obviously so surreal.
I wont believe in god out of fear of death.
but just because i dont believe in god doesnt mean that i am a bad person, I still am a very helpful and happy citizen, I just dont want to put all my eggs in one basket.